APA引文

Berger, J. L. (1994). Educators guide to free videotapes (41st ed.). Educators Progress Service.

Chicago Style (17th ed.) Citation

Berger, James L. Educators Guide to Free Videotapes. 41st ed. Randolph Wis: Educators Progress Service, 1994.

MLA引文

Berger, James L. Educators Guide to Free Videotapes. 41st ed. Educators Progress Service, 1994.