Cita APA (7a ed.)

Duffin, H. C. (1939). The Quintessence of Bernard Shaw. G. Allen and Unwin.

Cita Chicago Style (17a ed.)

Duffin, Henry Charles. The Quintessence of Bernard Shaw. London: G. Allen and Unwin, 1939.

Cita MLA (9a ed.)

Duffin, Henry Charles. The Quintessence of Bernard Shaw. G. Allen and Unwin, 1939.