APA (7th ed.) Citation

(1978). Union list of geologic field trip guidebooks of North America (3.ed.). American Geological Inst.

Chicago Style (17th ed.) Citation

Union List of Geologic Field Trip Guidebooks of North America. 3.ed. Falls Church, Va: American Geological Inst, 1978.

MLA (9th ed.) Citation

Union List of Geologic Field Trip Guidebooks of North America. 3.ed. American Geological Inst, 1978.

Warning: These citations may not always be 100% accurate.