APA (7th ed.) Citation

(1976). The Bowker annual of library and book trade information with cumulative index 1972-1976 (21st ed.). R. R. Bowker Company.

Chicago Style (17th ed.) Citation

The Bowker Annual of Library and Book Trade Information with Cumulative Index 1972-1976. 21st ed. New York: R. R. Bowker Company, 1976.

MLA (9th ed.) Citation

The Bowker Annual of Library and Book Trade Information with Cumulative Index 1972-1976. 21st ed. R. R. Bowker Company, 1976.