APA aipamena

Yearbook of science and the future. Chicago: Encyclopaedia Britannica.

Chicago Style aipamena

Yearbook of Science and the Future. Chicago: Encyclopaedia Britannica.

MLA aipamena

Yearbook of Science and the Future. Chicago: Encyclopaedia Britannica.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.