Cheney, F. N., & Williams, W. J. (1980). Fundamental reference sources (2nd ed.). American Library Association.
Cita Chicago (17th ed.)Cheney, Frances Neel, i Wiley J. Williams. Fundamental Reference Sources. 2nd ed. Chicago: American Library Association, 1980.
Cita MLA (9th ed.)Cheney, Frances Neel, i Wiley J. Williams. Fundamental Reference Sources. 2nd ed. American Library Association, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.