APA (7th ed.) Citation

Geological Survey (U.S.), Virginia. Division of Mineral Resources, & Zietz, I. (1977). Aeromagnetic map of Virginia. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Virginia. Division of Mineral Resources, and Isidore Zietz. Aeromagnetic Map of Virginia. Reston, Va.: The Survey, 1977.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Aeromagnetic Map of Virginia. The Survey, 1977.