APA aipamena

Basalla. (2007). Civilized life in the unverse. OUP.

Chicago Style aipamena

Basalla. Civilized Life in the Unverse. OUP, 2007.

MLA aipamena

Basalla. Civilized Life in the Unverse. OUP, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.