American Society of Mechanical Engineers. Fuels Handling, Transportation, and Storage Technical Committee, Joint Power Generation Conference, & Mahr, D. (1989). Handling low-grade coal: Fundamentals and applications : presented at the 1989 Joint Power Generation Conference, Dallas, Texas, October 22-26, 1989. American Society of Mechanical Engineers.
Chicago-viite (17. p.)American Society of Mechanical Engineers. Fuels Handling, Transportation, and Storage Technical Committee, Joint Power Generation Conference, ja Daniel Mahr. Handling Low-grade Coal: Fundamentals and Applications : Presented at the 1989 Joint Power Generation Conference, Dallas, Texas, October 22-26, 1989. New York, N.Y.: American Society of Mechanical Engineers, 1989.
MLA-viite (8. p.)American Society of Mechanical Engineers. Fuels Handling, Transportation, and Storage Technical Committee, et al. Handling Low-grade Coal: Fundamentals and Applications : Presented at the 1989 Joint Power Generation Conference, Dallas, Texas, October 22-26, 1989. American Society of Mechanical Engineers, 1989.