APA (7th ed.) Citation

Lawrence, H. M. (1930). Increased recoveries of phosphate in land-pebble district of Florida. [publisher not identified].

Chicago Style (17th ed.) Citation

Lawrence, Horace Marshall. Increased Recoveries of Phosphate in Land-pebble District of Florida. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Lawrence, Horace Marshall. Increased Recoveries of Phosphate in Land-pebble District of Florida. [publisher not identified], 1930.