APA (7th ed.) Citation

Tisdale, E. E. (1941). The geology of the Heart Butte quadrangle. U. N. D. Press.

Chicago Style (17th ed.) Citation

Tisdale, Ernest Edward. The Geology of the Heart Butte Quadrangle. Grand Forks, N.D.: U. N. D. Press, 1941.

MLA (9th ed.) Citation

Tisdale, Ernest Edward. The Geology of the Heart Butte Quadrangle. U. N. D. Press, 1941.