APA (7th ed.) Citation

Graphic Chart and Map Co, Alpena County Road Commission, & Alpena County Road Commission. (2006). Official map of Alpena County (Revised June 2006.). Alpena County Road Commission.

Chicago Style (17th ed.) Citation

Graphic Chart and Map Co, Alpena County Road Commission, and Alpena County Road Commission. Official Map of Alpena County. Revised June 2006. Alpena, Michigan: Alpena County Road Commission, 2006.

MLA (9th ed.) Citation

Graphic Chart and Map Co, et al. Official Map of Alpena County. Revised June 2006. Alpena County Road Commission, 2006.