International Geological Correlation Programme. (2000). Gological Correlation. IGCP.
Чикаго маягийн жагсаалтInternational Geological Correlation Programme. Gological Correlation. Paris: IGCP, 2000.
MLA ишлэлInternational Geological Correlation Programme. Gological Correlation. IGCP, 2000.
Warning: These citations may not always be 100% accurate.