Cita APA (7th ed.)

Jones, W. B., & Harper, R. M. (1935). History and work of geological surveys and industrial development in Alabama. Geological Survey of Alabama.

Cita Chicago (17th ed.)

Jones, Walter B., i Roland M. Harper. History and Work of Geological Surveys and Industrial Development in Alabama. University, Ala.: Geological Survey of Alabama, 1935.

Cita MLA (8th ed.)

Jones, Walter B., i Roland M. Harper. History and Work of Geological Surveys and Industrial Development in Alabama. Geological Survey of Alabama, 1935.