APA aipamena

Duff, P. (1993). Holmes'principles of Physical Geology, 4th ed. Chapman &Hall.

Chicago Style aipamena

Duff, P.McL.D. Holmes'principles of Physical Geology, 4th Ed. London: Chapman &Hall, 1993.

MLA aipamena

Duff, P.McL.D. Holmes'principles of Physical Geology, 4th Ed. Chapman &Hall, 1993.