APA (7th ed.) Zitazioa

Bard, R. (1987). The trainer's professional development handbook. Jossey - Bass.

Chicago Style (17th ed.) Zitazioa

Bard, Ray. The Trainer's Professional Development Handbook. san Fransisco: Jossey - Bass, 1987.

MLA (9th ed.) Zitazioa

Bard, Ray. The Trainer's Professional Development Handbook. Jossey - Bass, 1987.