APA aipamena

(1962). Penrose annual: Review of the graphic arts. London: Lund Humphries & co., Ltd.

Chicago Style aipamena

Penrose Annual: Review of the Graphic Arts. London: Lund Humphries & co., Ltd, 1962.

MLA aipamena

Penrose Annual: Review of the Graphic Arts. London: Lund Humphries & co., Ltd, 1962.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.