APA (7th ed.) Citation

Richardson, A. (1980). A retrospective look at the Negro leagues and professional Negro baseball players. [publisher not identified].

Chicago Style (17th ed.) Citation

Richardson, Allen. A Retrospective Look at the Negro Leagues and Professional Negro Baseball Players. [Place of publication not identified]: [publisher not identified], 1980.

MLA (9th ed.) Citation

Richardson, Allen. A Retrospective Look at the Negro Leagues and Professional Negro Baseball Players. [publisher not identified], 1980.