APA-ийн эшлэл(7 дахь хэвлэлт)

Martyn, J. R. C. (2013). Gregory and Leander: An analysis of the special friendship between Pope Gregory the Great and Leander, Archbishop of Seville. Cambridge Scholars Publishing.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Martyn, John R. C. Gregory and Leander: An Analysis of the Special Friendship Between Pope Gregory the Great and Leander, Archbishop of Seville. Newcastle upon Tyne: Cambridge Scholars Publishing, 2013.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Martyn, John R. C. Gregory and Leander: An Analysis of the Special Friendship Between Pope Gregory the Great and Leander, Archbishop of Seville. Cambridge Scholars Publishing, 2013.