Cita APA (7th ed.)

COULSON, C. (1961). Valence. O,U,P..

Cita Chicago (17th ed.)

COULSON, C.A. Valence. London: O,U,P., 1961.

Cita MLA (9th ed.)

COULSON, C.A. Valence. O,U,P., 1961.