APA (7th ed.) Citation

Hall, G. M., Foster, M. D., & Howard, C. S. (1934). Ground water in southeastern Pennsylvania. Pennsylvania Dept. of Internal Affairs, Topographic and Geologic Survey.

Chicago Style (17th ed.) Citation

Hall, George Martin, Margaret D. Foster, and C. S. Howard. Ground Water in Southeastern Pennsylvania. Harrisburg, Pa.: Pennsylvania Dept. of Internal Affairs, Topographic and Geologic Survey, 1934.

MLA (9th ed.) Citation

Hall, George Martin, et al. Ground Water in Southeastern Pennsylvania. Pennsylvania Dept. of Internal Affairs, Topographic and Geologic Survey, 1934.