APA (7th ed.) Citation

Hunter, R. E., Hill, G. W., & Garrison, L. E. (1974). Maps showing drift patterns along the south Texas coast, 1970-1973. [Geological Survey?].

Chicago Style (17th ed.) Citation

Hunter, Ralph Eugene, Gary W. Hill, and Louis E. Garrison. Maps Showing Drift Patterns Along the South Texas Coast, 1970-1973. [Reston, Va.]: [Geological Survey?], 1974.

MLA (9th ed.) Citation

Hunter, Ralph Eugene, et al. Maps Showing Drift Patterns Along the South Texas Coast, 1970-1973. [Geological Survey?], 1974.