APA (7th ed.) Citation

American Publishing Co. (Milwaukee, Wis.), & Historic Urban Plans (Firm). (1890). Perspective map of the city of Helena, Mont., capital of State, county seat of Lewis & Clarke Co. Historic Urban Plans.

Chicago Style (17th ed.) Citation

American Publishing Co. (Milwaukee, Wis.), and Historic Urban Plans (Firm). Perspective Map of the City of Helena, Mont., Capital of State, County Seat of Lewis & Clarke Co. Milwaukee, Ithaca, N.Y.: Historic Urban Plans, 1890.

MLA (9th ed.) Citation

American Publishing Co. (Milwaukee, Wis.), and Historic Urban Plans (Firm). Perspective Map of the City of Helena, Mont., Capital of State, County Seat of Lewis & Clarke Co. Historic Urban Plans, 1890.