APA (7th ed.) Citation

National Information Center for Educational Media (U.S.). (1977). Index to educational audio tapes (4th ed.). National Information Center for Educational Media, University of Southern California.

Chicago Style (17th ed.) Citation

National Information Center for Educational Media (U.S.). Index to Educational Audio Tapes. 4th ed. Los Angeles: National Information Center for Educational Media, University of Southern California, 1977.

MLA (8th ed.) Citation

National Information Center for Educational Media (U.S.). Index to Educational Audio Tapes. 4th ed. National Information Center for Educational Media, University of Southern California, 1977.