APA (7th ed.) Citation
Abstracts of North American geology, US Geological Survey. US GEOLOGICAL SURVEY.
Chicago Style (17th ed.) Citation
Abstracts of North American Geology, US Geological Survey. WASHINGTON, d.c.: US GEOLOGICAL SURVEY.
MLA (9th ed.) Citation
Abstracts of North American Geology, US Geological Survey. US GEOLOGICAL SURVEY.
Warning: These citations may not always be 100% accurate.