Sayers, W. B. (1975). Sayers' manual of classification for Librarians (5th ed.). Andre Deutsch.
Cita Chicago (17th ed.)Sayers, W.C. Berwick. Sayers' Manual of Classification for Librarians. 5th ed. London: Andre Deutsch, 1975.
Cita MLA (9th ed.)Sayers, W.C. Berwick. Sayers' Manual of Classification for Librarians. 5th ed. Andre Deutsch, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.