Παραπομπή APA

Westby B M. (1977). Sears List of Subject Headings (11.). The H.W. Wilson Company.

Παραπομπή Chicago Style

Westby B M. Sears List of Subject Headings. 11. New York: The H.W. Wilson Company, 1977.

Παραπομπή MLA

Westby B M. Sears List of Subject Headings. 11. The H.W. Wilson Company, 1977.