APA aipamena

Singer, S. F. (1979). Energy. California: W.H.Freeman And Company.

Chicago Style aipamena

Singer, S. Fred. Energy. California: W.H.Freeman And Company, 1979.

MLA aipamena

Singer, S. Fred. Energy. California: W.H.Freeman And Company, 1979.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.