APA (7th ed.) Citation

Geological Survey (U.S.). (1991). Sault Ste. Marie North, Michigan--Ontario, 1985: 1:100 000-scale metric topographic map : 30 x 60 minute series (topographic) (Photoinspected 1988.). The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Sault Ste. Marie North, Michigan--Ontario, 1985: 1:100 000-scale Metric Topographic Map : 30 X 60 Minute Series (topographic). Photoinspected 1988. Reston, Va.: The Survey, 1991.

MLA (8th ed.) Citation

Geological Survey (U.S.). Sault Ste. Marie North, Michigan--Ontario, 1985: 1:100 000-scale Metric Topographic Map : 30 X 60 Minute Series (topographic). Photoinspected 1988. The Survey, 1991.