APA (7th ed.) Citation

Johnston, W. D. (1930). Physical divisions of northern Alabama.

Chicago Style (17th ed.) Citation

Johnston, William Drumm. Physical Divisions of Northern Alabama. University, Ala, 1930.

MLA (8th ed.) Citation

Johnston, William Drumm. Physical Divisions of Northern Alabama. 1930.

Warning: These citations may not always be 100% accurate.