Cita APA (7a ed.)

Heym, S. (1969). Uncertain friend: A biographical novel (1. publ.). Cassell.

Cita Chicago Style (17a ed.)

Heym, Stefan. Uncertain Friend: A Biographical Novel. 1. publ. London: Cassell, 1969.

Cita MLA (8a ed.)

Heym, Stefan. Uncertain Friend: A Biographical Novel. 1. publ. Cassell, 1969.