APA (7th ed.) Citation
Boyce, E. G., & Turner, R. M. (1983). WELLMAP, a FORTRAN computer program for the generation of maps of specified geographic areas with a variety of well symbols available to depict the current status of given oil and gas drilling. Department of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) Citation
Boyce, E. G., and Robert M. Turner. WELLMAP, a FORTRAN Computer Program for the Generation of Maps of Specified Geographic Areas with a Variety of Well Symbols Available to Depict the Current Status of Given Oil and Gas Drilling. [Reston, Va.]: Department of the Interior, U.S. Geological Survey, 1983.
MLA (9th ed.) Citation
Boyce, E. G., and Robert M. Turner. WELLMAP, a FORTRAN Computer Program for the Generation of Maps of Specified Geographic Areas with a Variety of Well Symbols Available to Depict the Current Status of Given Oil and Gas Drilling. Department of the Interior, U.S. Geological Survey, 1983.
Warning: These citations may not always be 100% accurate.