Cita APA

Penney, W. G. (1935). The quantum theory of valency. Methuen.

Citación estilo Chicago

Penney, William George. The Quantum Theory of Valency. London: Methuen, 1935.

Cita MLA

Penney, William George. The Quantum Theory of Valency. Methuen, 1935.

Warning: These citations may not always be 100% accurate.