APA Citation

Estados Unidos Army Map Service Corps of Engineers. (1954). Opico, El Salvador (Edition 1-AMS.). Washington, D. C.

Chicago Style Citation

Estados Unidos Army Map Service Corps of Engineers. Opico, El Salvador. Edition 1-AMS. Washington, D. C, 1954.

MLA Citation

Estados Unidos Army Map Service Corps of Engineers. Opico, El Salvador. Edition 1-AMS. Washington, D. C, 1954.

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