APA aipamena

Shapiro, R. (1986). Origins: A skeptic's guide the creation of life on the earth. London: Penguin Books.

Chicago Style aipamena

Shapiro, Robert. Origins: A Skeptic's Guide the Creation of Life On the Earth. London: Penguin Books, 1986.

MLA aipamena

Shapiro, Robert. Origins: A Skeptic's Guide the Creation of Life On the Earth. London: Penguin Books, 1986.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.