APA (7th ed.) Citation

Keirsey, D., & Bates, M. (1984). Please understand me: Character & temperament types (5th ed.). Prometheus Nemesis Book.

Chicago Style (17th ed.) Citation

Keirsey, David, and Marilyn Bates. Please Understand Me: Character & Temperament Types. 5th ed. Del Mar: Prometheus Nemesis Book, 1984.

MLA (9th ed.) Citation

Keirsey, David, and Marilyn Bates. Please Understand Me: Character & Temperament Types. 5th ed. Prometheus Nemesis Book, 1984.