APA (7th ed.) Citation

United States. Department of the Interior. (1921). World atlas of commercial geology: Part I. Distribution of mineral production. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of the Interior. World Atlas of Commercial Geology: Part I. Distribution of Mineral Production. [Washington]: [publisher not identified], 1921.

MLA (9th ed.) Citation

United States. Department of the Interior. World Atlas of Commercial Geology: Part I. Distribution of Mineral Production. [publisher not identified], 1921.