Schmidt, P. F. (1951). Fuel oil manual: For the oil user who wants to know about fuel oil selection, properties, handling, burning, troubles and remedies, together with working data for building heating, power generation, and industrial processes. Industrial Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Schmidt, Paul F. Fuel Oil Manual: For the Oil User Who Wants to Know About Fuel Oil Selection, Properties, Handling, Burning, Troubles and Remedies, Together with Working Data for Building Heating, Power Generation, and Industrial Processes. Nueva York: Industrial Press, 1951.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Schmidt, Paul F. Fuel Oil Manual: For the Oil User Who Wants to Know About Fuel Oil Selection, Properties, Handling, Burning, Troubles and Remedies, Together with Working Data for Building Heating, Power Generation, and Industrial Processes. Industrial Press, 1951.