APA (7th ed.) Citation

Drake, A. A., & Lyttle, P. T. (1981). The Accotink schist, Lake Barcroft metasandstone, and Popes Head formation: Keys to an understanding of the tectonic evolution of the northern Virginia Piedmont. U.S. Dept. of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Drake, Avery Ala, and Peter T. Lyttle. The Accotink Schist, Lake Barcroft Metasandstone, and Popes Head Formation: Keys to an Understanding of the Tectonic Evolution of the Northern Virginia Piedmont. [Reston, Va.]: U.S. Dept. of the Interior, Geological Survey, 1981.

MLA (9th ed.) Citation

Drake, Avery Ala, and Peter T. Lyttle. The Accotink Schist, Lake Barcroft Metasandstone, and Popes Head Formation: Keys to an Understanding of the Tectonic Evolution of the Northern Virginia Piedmont. U.S. Dept. of the Interior, Geological Survey, 1981.