APA (7th ed.) Citation

International Geological Correlation Programme. (1980). IGCP catalogue. Unesco.

Chicago Style (17th ed.) Citation

International Geological Correlation Programme. IGCP Catalogue. [Paris]: Unesco, 1980.

MLA (8th ed.) Citation

International Geological Correlation Programme. IGCP Catalogue. Unesco, 1980.

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