Northwest Conference on Geothermal Power & Washington (State). Department of Natural Resources. (1971). Papers presented at the ... Northwest Conference on Geothermal Power. Washington State Dept. of Natural Resources.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Northwest Conference on Geothermal Power و Washington (State). Department of Natural Resources. Papers Presented at the ... Northwest Conference on Geothermal Power. Olympia, Washington: Washington State Dept. of Natural Resources, 1971.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Northwest Conference on Geothermal Power و Washington (State). Department of Natural Resources. Papers Presented at the ... Northwest Conference on Geothermal Power. Washington State Dept. of Natural Resources, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.