APA aipamena

RICHARDS, R. (1991). An Early Start To Ourselves And Evolution With Life Processes Roy Richards. Simon and Schuster.

Chicago Style aipamena

RICHARDS, Roy. An Early Start To Ourselves And Evolution With Life Processes Roy Richards. Simon and Schuster, 1991.

MLA aipamena

RICHARDS, Roy. An Early Start To Ourselves And Evolution With Life Processes Roy Richards. Simon and Schuster, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.