APA (7th ed.) Citation

Leonard, A. G., Babcock, E. J., & Dove, L. P. (1925). The lignite deposits of North Dakota. Published for the State Geological Survey [Normanden Publishing Co.].

Chicago Style (17th ed.) Citation

Leonard, Arthur Gray, E. J. Babcock, and Leonard Percy Dove. The Lignite Deposits of North Dakota. [Grand Forks]: Published for the State Geological Survey [Normanden Publishing Co.], 1925.

MLA (9th ed.) Citation

Leonard, Arthur Gray, et al. The Lignite Deposits of North Dakota. Published for the State Geological Survey [Normanden Publishing Co.], 1925.