1. Coal;Van Krevelen,1961
2. International Committee for Coal Petrology (1963) International Handbook of Coal Petrography, 2nd edn., Centre National de la Recherche Scientifique, Paris, with supplements 1971, 1976
3. Stach's Textbook of Coal Petrology;Stach,1982
4. Les Combustibles Fossiles;Alpern;Les Sciences – Alpha – Géologie,1976