APA (7th ed.) Citation

Heller, Á. (2009). A theory of feelings (2nd ed.). Lexington Books.

Chicago Style (17th ed.) Citation

Heller, Ágnes. A Theory of Feelings. 2nd ed. Lanham: Lexington Books, 2009.

MLA (9th ed.) Citation

Heller, Ágnes. A Theory of Feelings. 2nd ed. Lexington Books, 2009.

Warning: These citations may not always be 100% accurate.