Cita APA (7a ed.)

Russell, B. (1964). The conquest of happiness (4th.). Unwin books.

Cita Chicago Style (17a ed.)

Russell, Bertrand. The Conquest of Happiness. 4th. London: Unwin books, 1964.

Cita MLA (9a ed.)

Russell, Bertrand. The Conquest of Happiness. 4th. Unwin books, 1964.