APA

R.R. Bowker Company, . (1974). Index to instructional media catalogs: a multi-indexed directory of materials and equipment for use in instructional programs. New York: Bowker.

Chicago

R.R. Bowker Company, . 1974. Index to instructional media catalogs: a multi-indexed directory of materials and equipment for use in instructional programs. New York: Bowker.

Harvard

R.R. Bowker Company, . (1974). Index to instructional media catalogs: a multi-indexed directory of materials and equipment for use in instructional programs. New York: Bowker.

MLA

R.R. Bowker Company, . Index to instructional media catalogs: a multi-indexed directory of materials and equipment for use in instructional programs. New York: Bowker. 1974.