Sheehy, E. P., & Winchell, C. M. (1972). Guide to reference books: Third supplement, 1969-1970 (8th ed.). American Library Association.
Lua i Stíl Chicago (17ú heag.)Sheehy, Eugene P., agus Constance M. Winchell. Guide to Reference Books: Third Supplement, 1969-1970. 8th ed. Chicago: American Library Association, 1972.
Lua MLA (8ú heag.)Sheehy, Eugene P., agus Constance M. Winchell. Guide to Reference Books: Third Supplement, 1969-1970. 8th ed. American Library Association, 1972.
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