APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Geographic Map of the Yemen Arab Republic (Şanʻāʼ). Reston, VA: The Survey, 1978.

MLA (9th ed.) Citation

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

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