APA

Hildebrand D. v., Crosby J. F., Crosby J. H. & Schmitz K. L. (2009). The nature of love. South Bend, IN: St. Augustine's Press.

Chicago

Hildebrand Dietrich von, Crosby John F, Crosby John Henry and Schmitz Kenneth L. 2009. The nature of love. South Bend, IN: St. Augustine's Press.

Harvard

Hildebrand D. v., Crosby J. F., Crosby J. H. and Schmitz K. L. (2009). The nature of love. South Bend, IN: St. Augustine's Press.

MLA

Hildebrand Dietrich von, Crosby John F, Crosby John Henry and Schmitz Kenneth L. The nature of love. South Bend, IN: St. Augustine's Press. 2009.