European Academies Science Advisory Council. A study on the EU oil shale industry , viewed in the light of the estonian experience.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)European Academies Science Advisory Council. A Study on the EU Oil Shale Industry , Viewed in the Light of the Estonian Experience.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)European Academies Science Advisory Council. A Study on the EU Oil Shale Industry , Viewed in the Light of the Estonian Experience.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.