Cita APA (7a ed.)

Speakman, J. C. (1968). A valency primer. Edward Arnold.

Cita Chicago Style (17a ed.)

Speakman, J. C. A Valency Primer. London: Edward Arnold, 1968.

Cita MLA (9a ed.)

Speakman, J. C. A Valency Primer. Edward Arnold, 1968.