APA (7th ed.) Citation

Geological Survey (U.S.). (1978). Geographic map of the Yemen Arab Republic (ŞanʻĀʼ). U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Geographic Map of the Yemen Arab Republic (ŞanʻĀʼ). Reston, Va.: U.S. Geological Survey, 1978.

MLA (8th ed.) Citation

Geological Survey (U.S.). Geographic Map of the Yemen Arab Republic (ŞanʻĀʼ). U.S. Geological Survey, 1978.

Warning: These citations may not always be 100% accurate.