APA
International Energy Agency et al, IEA International Conference S., . (1994). The Clean and efficient use of coal and lignite. Paris: OECD.
Chicago
International Energy Agency et al, IEA International Conference Second, . 1994. The Clean and efficient use of coal and lignite. Paris: OECD.
Harvard
International Energy Agency et al, IEA International Conference S., . (1994). The Clean and efficient use of coal and lignite. Paris: OECD.
MLA
International Energy Agency et al, IEA International Conference Second, . The Clean and efficient use of coal and lignite. Paris: OECD. 1994.