Cita APA

Sayers, W. B. (1943). Introduction to library classification: Theoretical, historical and practical with readings, exercises and examination papers (6a. ed.). London: Grafton.

Citación estilo Chicago

Sayers, W.C. Berwick. Introduction to Library Classification: Theoretical, Historical and Practical With Readings, Exercises and Examination Papers. 6a. ed. London: Grafton, 1943.

Cita MLA

Sayers, W.C. Berwick. Introduction to Library Classification: Theoretical, Historical and Practical With Readings, Exercises and Examination Papers. 6a. ed. London: Grafton, 1943.