APA-ийн эшлэл(7 дахь хэвлэлт)

Ayres, I., & Ian Ayres. (2012). Studies in contract law (8th ed.). Foundation Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Ayres, Ian, ба Ian Ayres. Studies in Contract Law. 8th ed. New York: Foundation Press, 2012.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Ayres, Ian, ба Ian Ayres. Studies in Contract Law. 8th ed. Foundation Press, 2012.