Unted States. George C. Marshall Space Flight Center. (1975). The development of a solar residential heating and cooling system. National Technical Information Service.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Unted States. George C. Marshall Space Flight Center. The Development of a Solar Residential Heating and Cooling System. Springfield, Va: National Technical Information Service, 1975.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Unted States. George C. Marshall Space Flight Center. The Development of a Solar Residential Heating and Cooling System. National Technical Information Service, 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.