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احمدبن حنبل بغدادی ( بی تا) مسند احمد. بیروت: دار صادر.
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یاقوت حموی (1399/1979) معجم البلدان. بیروت: دار إحیاء التراث العربی.
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Hawting, Gerald, The Sectarin Milieu (Wansbrough), Foreword.
Hoyland, Robert. G, “Earliest Christian Writings On Muhammad: An appraisal”, in: The Biography of Muhammad: The Issue of the Sources, Edited by: Harald Motzki, Brill, 2000, p. 276-297.
Ibid, Seeing Islam As Others Saw It: A Survey and Evaluation of Christian, Jewish and Zoroastrian Writings on Early Islam, The Darwin Press,INC. Princeton, New Jersey, 1997 (second printing, 2001).
Ibid, The Seventh Century in the West-Syrian Chronicles, Liverpool University Press, 1993.
Koren, Judith. & Nevo, Yehuda, "Methodological Approaches To Islamic Studies", Der Islam, 1991, Band 68.
Maloush, Talal, Early Hadith Literature And The Theory Of Ignaz Goldziher, Edinburgh, August 2000.
Motzki, Harald, “Dating Muslim Traditions: A Survey”, Arabica 52:2 (2005) Leiden: Brill.
Ibid, The Origins of Islamic Jurisprudence, Translated from German: Marion H. Katz, Brill, Leiden. Boston. Köln, 2002.
Muir, Sir W, The Mohammedan Controversy, Biographies Of Mohammed, Sprenger On Tradition, Indian Liturgy And The Psalter, 1897, T. & T. Clark: Edinburgh.
Nevo, Y. D, "Towards A Prehistory Of Islam", Jerusalem Studies In Arabic And Islam, 1994.
Nevo, Yehuda D. and Koren, Judith, Crossroads To Islam: The Origins of the Arab Religion and Arab State, Amherst, New York, 2003.
Nichol, Jon, creativity, connectivity and interpretation, in: Hilary Cooper, Teaching History creatively, Routledge 2013.
Neuwirth, Angelika, Qur'an and History - a Disputed Relationship Some Reflections on Qur'anic History and History in the Qur'an Journal of Qur'anic Studies, vol. v, no. I, 2003, pp. 1-118.
Ohlig, Karl-Heinz and Puin, Gerd-R. The Hidden Origins of Islam: New Research into Its Early History, Amherst, New York, 2010.
Saadi, Abdul-Massih, Nascent Islam in the seventh century Syriac sources, in: The Quran in its Historical Context, Edited by Gabriel Said Reynolds, Routledge, 2008, p. 217-222.
Schacht, Joseph, The Origins of Mohammadan Jurisprudence, Oxford, Clarendon Press, 1950.
Schoeler, Gregor, The Biography of Mohammad: Nature and Authenticity, translated by Uwe VagelPohl, Edited by James E. Montgomery, Routledge, 2011.
Suermann, Harald, Early Islam in the Light of Christian and Jewish Sources, in: The Qurʾān in Context: Historical and Literary Investigations into the Qurānic Milieu, Edited by: Angelika Neuwirth, Nicolai Sinai, Michael Marx, Leiden/ Boston: 2010.
Wansbrough, John,, Quranic Studies: Sources and Methods of Scriptural Interpretation, Foreword, Translations, and Expanded Notes by ANDREW RIPPIN, Prometheus Books, Amherst, New York, 2004.
Ibid, The Sectarian Milieu: Content and Composition of Islamic Salvation History, Amherst, New York, 2006.