APA Citation

(1988). International codification system for medium and high rank coals. Nueva York: Naciones Unidas.

Chicago Style Citation

International Codification System for Medium and High Rank Coals. Nueva York: Naciones Unidas, 1988.

MLA Citation

International Codification System for Medium and High Rank Coals. Nueva York: Naciones Unidas, 1988.

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