APA (7th ed.) Citation

Geological Survey, Barnes, D. F., Brew, D. A., & Morin, R. L. (1989). Bouguer gravity map of the Petersburg quadrangle and parts of the Port Alexander, Sitka, and Sumdum quadrangles, Alaska. The Survey ; Alaska Distribution Section ; For sale by Map Distribution.

Chicago Style (17th ed.) Citation

Geological Survey, David F. Barnes, David A. Brew, and Robert L. Morin. Bouguer Gravity Map of the Petersburg Quadrangle and Parts of the Port Alexander, Sitka, and Sumdum Quadrangles, Alaska. Reston, Va. : Fairbanks, AK : Denver, CO: The Survey ; Alaska Distribution Section ; For sale by Map Distribution, 1989.

MLA (8th ed.) Citation

Geological Survey, et al. Bouguer Gravity Map of the Petersburg Quadrangle and Parts of the Port Alexander, Sitka, and Sumdum Quadrangles, Alaska. The Survey ; Alaska Distribution Section ; For sale by Map Distribution, 1989.