Interior, U. S. D. o. t. (1982). Generalized geologic map of Alabama / [peta]. Washington DC : U S Government Printing Office.
Chicago-viite (17. p.)Interior, United States. Department of the. Generalized Geologic Map of Alabama / [peta]. Washington DC : U S Government Printing Office, 1982.
MLA-viite (9. p.)Interior, United States. Department of the. Generalized Geologic Map of Alabama / [peta]. Washington DC : U S Government Printing Office, 1982.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.