APA (7th ed.) Citation

Rugh, A. G. (1975). Toward a Science of Reference Work: Basic Concepts.

Chicago Style (17th ed.) Citation

Rugh, Archie G. Toward a Science of Reference Work: Basic Concepts. 1975.

MLA (9th ed.) Citation

Rugh, Archie G. Toward a Science of Reference Work: Basic Concepts. 1975.

Warning: These citations may not always be 100% accurate.