Blaustein, B. D., Bockrath, B. C., & Friedman, S. (1981). New approaches in coal chemistry. American Chemical Society.
Citazione stile Chigago Style (17a edizione)Blaustein, Bernard D., Bradley C. Bockrath, e Sidney Friedman. New Approaches in Coal Chemistry. Washington, DC: American Chemical Society, 1981.
Citatione MLA (9a ed.)Blaustein, Bernard D., et al. New Approaches in Coal Chemistry. American Chemical Society, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.