APA (7th ed.) Citation

Geological Survey (U.S.), East Carolina University, International Geological Correlation Programme. Project 156 Phosphorites, & Sheldon, R. P. (1985). Undiscovered phosphate resources in the Caribbean region and their potential value for agricultural development. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), East Carolina University, International Geological Correlation Programme. Project 156 Phosphorites, and Richard Porter Sheldon. Undiscovered Phosphate Resources in the Caribbean Region and Their Potential Value for Agricultural Development. Reston, Va.: Dept. of the Interior, U.S. Geological Survey, 1985.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Undiscovered Phosphate Resources in the Caribbean Region and Their Potential Value for Agricultural Development. Dept. of the Interior, U.S. Geological Survey, 1985.