Ekman, P., & Friesen, W. V. (2003). Unmasking the face: A guide to recognizing emotions from facial clues / Paul Ekman and Wallace V. Friesen (4. [print.].). Malor Books.
Čikaški stil citiranja (17. izdanje)Ekman, Paul, i Wallace V. Friesen. Unmasking the Face: A Guide to Recognizing Emotions from Facial Clues / Paul Ekman and Wallace V. Friesen. 4. [print.]. Cambridge, MA: Malor Books, 2003.
MLA način citiranja (8. izdanje)Ekman, Paul, i Wallace V. Friesen. Unmasking the Face: A Guide to Recognizing Emotions from Facial Clues / Paul Ekman and Wallace V. Friesen. 4. [print.]. Malor Books, 2003.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.