APA aipamena

Koestler, A. (1968). sleep walkers. Hutchinson.

Chicago Style aipamena

Koestler, Arthur. Sleep Walkers. London: Hutchinson, 1968.

MLA aipamena

Koestler, Arthur. Sleep Walkers. Hutchinson, 1968.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.