APA-viite (7. p.)

(1918). An introduction to library classification; with readings, questions and examination papers, by W.C. Berwick Sayers ..

Chicago-viite (17. p.)

An Introduction to Library Classification; with Readings, Questions and Examination Papers, by W.C. Berwick Sayers .. 1918.

MLA-viite (9. p.)

An Introduction to Library Classification; with Readings, Questions and Examination Papers, by W.C. Berwick Sayers .. 1918.