Allsup, J. R., & Fleming, R. D. (1975). Optimum automotive use of the combustion characteristics of gas from coal-low pollution considerations. U.S. Dept. of the Interior.
Lua i Stíl Chicago (17ú heag.)Allsup, Jerry R., agus Ralph D. Fleming. Optimum Automotive Use of the Combustion Characteristics of Gas from Coal-low Pollution Considerations. Washington, D.C.: U.S. Dept. of the Interior, 1975.
Lua MLA (9ú heag.)Allsup, Jerry R., agus Ralph D. Fleming. Optimum Automotive Use of the Combustion Characteristics of Gas from Coal-low Pollution Considerations. U.S. Dept. of the Interior, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.