APA (7th ed.) Citation

Omni Resources, GoTrekkers, & Memory-Map, I. (2010). Yemen 1: 200,000 topographic maps (Version 1.0.). Omnimap ; GoTrekkers.

Chicago Style (17th ed.) Citation

Omni Resources, GoTrekkers, and Inc Memory-Map. Yemen 1: 200,000 Topographic Maps. Version 1.0. [Burlington, N.C.] : [Calgary]: Omnimap ; GoTrekkers, 2010.

MLA (8th ed.) Citation

Omni Resources, et al. Yemen 1: 200,000 Topographic Maps. Version 1.0. Omnimap ; GoTrekkers, 2010.