APA

BIRKELAND P. W., LARSON E. E., . (1989). Putnam's geology. New York: Oxford Univ. Press.

Chicago

BIRKELAND Peter W, LARSON Edwin E, . 1989. Putnam's geology. New York: Oxford Univ. Press.

Harvard

BIRKELAND P. W., LARSON E. E., . (1989). Putnam's geology. New York: Oxford Univ. Press.

MLA

BIRKELAND Peter W, LARSON Edwin E, . Putnam's geology. New York: Oxford Univ. Press. 1989.