APA (7th ed.) Citation

O'Hara, N. W. (1981). Great Lakes region gravity and magnetic map sequence, MC-41, Great Lakes area. Geological Society of America.

Chicago Style (17th ed.) Citation

O'Hara, Norbert W. Great Lakes Region Gravity and Magnetic Map Sequence, MC-41, Great Lakes Area. Boulder, Colo.: Geological Society of America, 1981.

MLA (8th ed.) Citation

O'Hara, Norbert W. Great Lakes Region Gravity and Magnetic Map Sequence, MC-41, Great Lakes Area. Geological Society of America, 1981.