APA (7th ed.) Citation

Huffman, K., Vernoy, M. W., & Vernoy, J. (1997). Psychology in action (4η έκδ.). John Wiley and Sons.

Chicago Style (17th ed.) Citation

Huffman, Karen, Mark W. Vernoy, and Judith Vernoy. Psychology in Action. 4η έκδ. New York: John Wiley and Sons, 1997.

MLA (8th ed.) Citation

Huffman, Karen, et al. Psychology in Action. 4η έκδ. John Wiley and Sons, 1997.