APA

Gottfried D., Macdonald R., Sutter J. F., Pavlides L. & United States Geological Survey. (1984). Geochemical features and 40Ar/39Ar age of tholeiitic and mafic-alkalic dikes in Aroostook County, northeastern Maine. Washington: United States Government Printing Office.

Chicago

Gottfried David, Macdonald Raymond, Sutter John F, Pavlides Louis and United States Geological Survey. 1984. Geochemical features and 40Ar/39Ar age of tholeiitic and mafic-alkalic dikes in Aroostook County, northeastern Maine. Washington: United States Government Printing Office.

Harvard

Gottfried D., Macdonald R., Sutter J. F., Pavlides L. and United States Geological Survey. (1984). Geochemical features and 40Ar/39Ar age of tholeiitic and mafic-alkalic dikes in Aroostook County, northeastern Maine. Washington: United States Government Printing Office.

MLA

Gottfried David, Macdonald Raymond, Sutter John F, Pavlides Louis and United States Geological Survey. Geochemical features and 40Ar/39Ar age of tholeiitic and mafic-alkalic dikes in Aroostook County, northeastern Maine. Washington: United States Government Printing Office. 1984.