APA aipamena

Dempsey, M. W. (1970). Purnell's concise encyclopedia in colour. Purnell.

Chicago Style aipamena

Dempsey, Michael W. Purnell's Concise Encyclopedia in Colour. London: Purnell, 1970.

MLA aipamena

Dempsey, Michael W. Purnell's Concise Encyclopedia in Colour. Purnell, 1970.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.