APA (7th ed.) Citation

Liberman, R. P. (1975). Personal effectiveness: Guiding people to assert themselves and improve their social skills. Research Press.

Chicago Style (17th ed.) Citation

Liberman, Robert Paul. Personal Effectiveness: Guiding People to Assert Themselves and Improve Their Social Skills. Champaign, Ill.: Research Press, 1975.

MLA (9th ed.) Citation

Liberman, Robert Paul. Personal Effectiveness: Guiding People to Assert Themselves and Improve Their Social Skills. Research Press, 1975.