APA aipamena

Johns, C. W. (1976). Biggles breaks the silence. Longman.

Chicago Style aipamena

Johns, Captain W.E. Biggles Breaks the Silence. Longman, 1976.

MLA aipamena

Johns, Captain W.E. Biggles Breaks the Silence. Longman, 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.