APA (7th ed.) Zitazioa

RIDPATH, I. (1982). Hamlyn encyclopedia of space. Hamlyn.

Chicago Style (17th ed.) Zitazioa

RIDPATH, Ian. Hamlyn Encyclopedia of Space. London: Hamlyn, 1982.

MLA (9th ed.) Zitazioa

RIDPATH, Ian. Hamlyn Encyclopedia of Space. Hamlyn, 1982.