American Society of Mechanical Engineers. Fuels Handling, Transportation, and Storage Technical Committee, Joint Power Generation Conference, & Mahr, D. (1988). Coal quality control: Fundamentals and applications. American Society of Mechanical Engineers.
Παραπομπή σε μορφή Chicago (17η εκδ.)American Society of Mechanical Engineers. Fuels Handling, Transportation, and Storage Technical Committee, Joint Power Generation Conference, και Daniel Mahr. Coal Quality Control: Fundamentals and Applications. New York: American Society of Mechanical Engineers, 1988.
Παραπομπή σε μορφή MLA (9th εκδ.)American Society of Mechanical Engineers. Fuels Handling, Transportation, and Storage Technical Committee, et al. Coal Quality Control: Fundamentals and Applications. American Society of Mechanical Engineers, 1988.