APA (7th ed.) Citation

Mapping Unlimited. (1968). Navigation charts of Houghton Lake and Higgins Lake, Roscommon County, Michigan ([1st ed.].). [publisher not identified].

Chicago Style (17th ed.) Citation

Mapping Unlimited. Navigation Charts of Houghton Lake and Higgins Lake, Roscommon County, Michigan. [1st ed.]. Detroit: [publisher not identified], 1968.

MLA (8th ed.) Citation

Mapping Unlimited. Navigation Charts of Houghton Lake and Higgins Lake, Roscommon County, Michigan. [1st ed.]. [publisher not identified], 1968.

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