APA (7th ed.) Citation

Mapel, W. J. (1976). Geologic map and coal sections of the Bar N Draw Quadrangle, Wyoming and Montana. The Survey.

Chicago Style (17th ed.) Citation

Mapel, W. J. Geologic Map and Coal Sections of the Bar N Draw Quadrangle, Wyoming and Montana. [Reston, Va.]: The Survey, 1976.

MLA (9th ed.) Citation

Mapel, W. J. Geologic Map and Coal Sections of the Bar N Draw Quadrangle, Wyoming and Montana. The Survey, 1976.