Sportsman's County Map Service & Phelps, L. R. (1950). Alpena County. Sportsman's County Map Service.
Chicago Style (17th ed.) CitationSportsman's County Map Service and Lee R. Phelps. Alpena County. Detroit, Mich.: Sportsman's County Map Service, 1950.
MLA (9th ed.) CitationSportsman's County Map Service and Lee R. Phelps. Alpena County. Sportsman's County Map Service, 1950.
Warning: These citations may not always be 100% accurate.