APA (7th ed.) Citation

Kentucky. Geological Survey, 1920-1932, Merrill, G. P., Weller, S., Jillson, W. R., St. Clair, S., & Crouse, C. S. (1921). The Sixth geological survey.: An administrative report of the several mineral resource and general geological investigations undertaken and completed in Kentucky during the biennial period 1920-1921. [The State journal company, printer to the commonwealth].

Chicago Style (17th ed.) Citation

Kentucky. Geological Survey, 1920-1932, George P. Merrill, Stuart Weller, Willard Rouse Jillson, Stuart St. Clair, and Charles Stevens Crouse. The Sixth Geological Survey.: An Administrative Report of the Several Mineral Resource and General Geological Investigations Undertaken and Completed in Kentucky During the Biennial Period 1920-1921. Frankfort, Ky.: [The State journal company, printer to the commonwealth], 1921.

MLA (9th ed.) Citation

Kentucky. Geological Survey, 1920-1932, et al. The Sixth Geological Survey.: An Administrative Report of the Several Mineral Resource and General Geological Investigations Undertaken and Completed in Kentucky During the Biennial Period 1920-1921. [The State journal company, printer to the commonwealth], 1921.