APA Edition Citation

Ekman, P., & Friesen, W. V. (1975). Unmasking the face: A guide to recognizing emotions from facial clues. Prentice-Hall.

Chicago Edition Citation

Ekman, Paul, and Wallace V. Friesen. Unmasking the Face: A Guide to Recognizing Emotions from Facial Clues. Englewood Cliffs, N.J.: Prentice-Hall, 1975.

MLA Edition Citation

Ekman, Paul, and Wallace V. Friesen. Unmasking the Face: A Guide to Recognizing Emotions from Facial Clues. Prentice-Hall, 1975.