Cita APA (7a ed.)

Peale, N. V. (1985). Was Begeisterung vermag. Oesch.

Cita Chicago Style (17a ed.)

Peale, Norman Vincent. Was Begeisterung Vermag. Zürich: Oesch, 1985.

Cita MLA (9a ed.)

Peale, Norman Vincent. Was Begeisterung Vermag. Oesch, 1985.