Cita APA (7a ed.)

Ridge, W. P. (1917). Nine to six-thirty. Methuen and Co..

Cita Chicago Style (17a ed.)

Ridge, W. Pett. Nine to Six-thirty. London: Methuen and Co., 1917.

Cita MLA (8a ed.)

Ridge, W. Pett. Nine to Six-thirty. Methuen and Co., 1917.