APA (7th ed.) Citation

Robinson, G. D., McCallum, M. E., & Hays, W. H. (1969). Geologic map of the Upper Holter Lake quadrangle, Lewis and Clark County, Montana. The Survey.

Chicago Style (17th ed.) Citation

Robinson, G. D., M. E. McCallum, and William Henry Hays. Geologic Map of the Upper Holter Lake Quadrangle, Lewis and Clark County, Montana. Washington, D.C.: The Survey, 1969.

MLA (9th ed.) Citation

Robinson, G. D., et al. Geologic Map of the Upper Holter Lake Quadrangle, Lewis and Clark County, Montana. The Survey, 1969.