Παραπομπή σε μορφή APA (7η εκδ.)

Lambert, o. A., & Shopkow, L. (2001). The history of the counts of Guines and Lords of Ardres. University of Pennsylvania Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lambert, of Ardres, και Leah Shopkow. The History of the Counts of Guines and Lords of Ardres. Philadelphia [Pa.]: University of Pennsylvania Press, 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

Lambert, of Ardres, και Leah Shopkow. The History of the Counts of Guines and Lords of Ardres. University of Pennsylvania Press, 2001.