Cita APA (7a ed.)

Happold, F. C. (1966). Religious faith and twentieth-century man. Penguin Books.

Cita Chicago Style (17a ed.)

Happold, F. C. Religious Faith and Twentieth-century Man. [Middlesex] [etc.]: Penguin Books, 1966.

Cita MLA (9a ed.)

Happold, F. C. Religious Faith and Twentieth-century Man. Penguin Books, 1966.