APA (7th ed.) Citation

Roberts, A. D. (1952). Introduction to reference books (2d ed. [rev.].). Library Association.

Chicago Style (17th ed.) Citation

Roberts, A. D. Introduction to Reference Books. 2d ed. [rev.]. London: Library Association, 1952.

MLA (9th ed.) Citation

Roberts, A. D. Introduction to Reference Books. 2d ed. [rev.]. Library Association, 1952.