APA (7th ed.) Citation

OJAKANGAS, R. W. (1991). Theory and problems of introductory geology. McGraw Hill.

Chicago Style (17th ed.) Citation

OJAKANGAS, Richard W. Theory and Problems of Introductory Geology. New York: McGraw Hill, 1991.

MLA (9th ed.) Citation

OJAKANGAS, Richard W. Theory and Problems of Introductory Geology. McGraw Hill, 1991.

Warning: These citations may not always be 100% accurate.