APA (7e ed.) Bronvermelding

Walton, S. (2004). A Natural history of human emotions. Grove Press.

Chicago (17e ed.) Bronvermelding

Walton, Stuart. A Natural History of Human Emotions. New York: Grove Press, 2004.

MLA (9e ed.) Bronvermelding

Walton, Stuart. A Natural History of Human Emotions. Grove Press, 2004.