Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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