Cita APA (7a ed.)

Waples, D. (1939). Investigating library problems. Univ. of Chicago press.

Cita Chicago Style (17a ed.)

Waples, Douglas. Investigating Library Problems. Chicago: Univ. of Chicago press, 1939.

Cita MLA (9a ed.)

Waples, Douglas. Investigating Library Problems. Univ. of Chicago press, 1939.