APA (7th ed.) Citation

International Geological Correlation Programme. Project 156 Phosphorites. (1981). Newsletter of the International Geological Correlation Programme. The Project.

Chicago Style (17th ed.) Citation

International Geological Correlation Programme. Project 156 Phosphorites. Newsletter of the International Geological Correlation Programme. London: The Project, 1981.

MLA (8th ed.) Citation

International Geological Correlation Programme. Project 156 Phosphorites. Newsletter of the International Geological Correlation Programme. The Project, 1981.

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