Huffman, K., Vernoy, J., & Vernoy, M. (1995). Essentials of psychology in action. John Wiley & Sons.

Huffman, Karen, Judith Vernoy, and Mark Vernoy. Essentials of Psychology in Action. New York: John Wiley & Sons, 1995.

Huffman, Karen, et al. Essentials of Psychology in Action. John Wiley & Sons, 1995.