APA aipamena

Open University Course Team. (1972). Copernicus by Colin A Russell. Units 15 and 16. Open Uty Press.

Chicago Style aipamena

Open University Course Team. Copernicus by Colin A Russell. Units 15 and 16. Open Uty Press, 1972.

MLA aipamena

Open University Course Team. Copernicus by Colin A Russell. Units 15 and 16. Open Uty Press, 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.