Cita APA (7a ed.)
Happold, F. C. Religious Faith and Twentieth-Century Man. Penguin.
Cita estilo Chicago (17a ed.)
Happold, F. Crossfield. Religious Faith and Twentieth-Century Man. Harmondsworth, Inglaterra: Penguin.
Cita MLA (9a ed.)
Happold, F. Crossfield. Religious Faith and Twentieth-Century Man. Penguin.
Precaución: Estas citas no son 100% exactas.