APA (7th ed.) Zitazioa

Heller, A. (2009). A theory of feelings (Second edition.). Lexington Books.

Chicago Style (17th ed.) Zitazioa

Heller, Agnes. A Theory of Feelings. Second edition. Lanham, Maryland ; Plymouth, England: Lexington Books, 2009.

MLA (9th ed.) Zitazioa

Heller, Agnes. A Theory of Feelings. Second edition. Lexington Books, 2009.