Lepp, I., & Gilligan, B. B. (1963). The psychology of loving. Mentor-Omega Book, Publ. by the New American Library.

Lepp, Ignace, and Bernard B. Gilligan. The Psychology of Loving. New York: Mentor-Omega Book, Publ. by the New American Library, 1963.

Lepp, Ignace, and Bernard B. Gilligan. The Psychology of Loving. Mentor-Omega Book, Publ. by the New American Library, 1963.