Symposium on In Situ Processing of Coal Montreal, Canada, American Chemical Society. Division of Fuel Chemistry, & Symposium on the Properties of Coal Ash. (1977). Symposium on In Situ processing of coal: Symposium on the properties on coal ash : preprints of papers presented at Montreal, Canada, May 29 - June 2, 1977. Division of Fuel Chemistry, American Chemical Society.
Παραπομπή σε μορφή Chicago (17η εκδ.)Symposium on In Situ Processing of Coal Montreal, Canada, American Chemical Society. Division of Fuel Chemistry, και Symposium on the Properties of Coal Ash. Symposium on In Situ Processing of Coal: Symposium on the Properties on Coal Ash : Preprints of Papers Presented at Montreal, Canada, May 29 - June 2, 1977. Pittsburgh, Pa.: Division of Fuel Chemistry, American Chemical Society, 1977.
Παραπομπή σε μορφή MLA (8th εκδ.)Symposium on In Situ Processing of Coal Montreal, Canada, et al. Symposium on In Situ Processing of Coal: Symposium on the Properties on Coal Ash : Preprints of Papers Presented at Montreal, Canada, May 29 - June 2, 1977. Division of Fuel Chemistry, American Chemical Society, 1977.