Given, P. H., & Robert F. Gould [ et al...]. (1966). Coal science: The american conference on coal science sponsored by the pennsylvania state university with the division of fuel chemistry of the american chemical society, the geological society of america, and the organic geochemistry group of the geochemical society, held at pennsylvania atate university, university park, Pa.,June 23-26 1964. American Chemical Society.
Lua i Stíl Chicago (17ú heag.)Given, Peter H., agus Robert F. Gould [ et al...]. Coal Science: The American Conference on Coal Science Sponsored by the Pennsylvania State University with the Division of Fuel Chemistry of the American Chemical Society, the Geological Society of America, and the Organic Geochemistry Group of the Geochemical Society, Held at Pennsylvania Atate University, University Park, Pa.,June 23-26 1964. Washington, D.C: American Chemical Society, 1966.
Lua MLA (9ú heag.)Given, Peter H., agus Robert F. Gould [ et al...]. Coal Science: The American Conference on Coal Science Sponsored by the Pennsylvania State University with the Division of Fuel Chemistry of the American Chemical Society, the Geological Society of America, and the Organic Geochemistry Group of the Geochemical Society, Held at Pennsylvania Atate University, University Park, Pa.,June 23-26 1964. American Chemical Society, 1966.