APA (7th ed.) Citation

United States. National Imagery and Mapping Agency. (1999). Guam, Northern Mariana Islands, North Pacific Ocean, Scale 1: 500,000, TPC K-13B, September 27, 1988. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. National Imagery and Mapping Agency. Guam, Northern Mariana Islands, North Pacific Ocean, Scale 1: 500,000, TPC K-13B, September 27, 1988. [Place of publication not identified]: [publisher not identified], 1999.

MLA (9th ed.) Citation

United States. National Imagery and Mapping Agency. Guam, Northern Mariana Islands, North Pacific Ocean, Scale 1: 500,000, TPC K-13B, September 27, 1988. [publisher not identified], 1999.