एपीए उद्धरण

Campbell, W. . H. (1997). Introduction to geomagnetic fields. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Campbell, Wallace H. Introduction to Geomagnetic Fields. UK: Cambridge University Press, 1997.

एमएलए उद्धरण

Campbell, Wallace H. Introduction to Geomagnetic Fields. Cambridge University Press, 1997.