APA (7th ed.) Citation

United States. National Imagery and Mapping Agency. (1999). Greenland, Scale 1: 500,000, TPC C-1A, August 4, 1986. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. National Imagery and Mapping Agency. Greenland, Scale 1: 500,000, TPC C-1A, August 4, 1986. [Place of publication not identified]: [publisher not identified], 1999.

MLA (9th ed.) Citation

United States. National Imagery and Mapping Agency. Greenland, Scale 1: 500,000, TPC C-1A, August 4, 1986. [publisher not identified], 1999.