Yunlai Bai, Hua Tang, Kai Yang, & Estonian Academy Publishers. Geological characteristics and some problems in development for oil shale in northwest China.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Yunlai Bai, Hua Tang, Kai Yang, و Estonian Academy Publishers. Geological Characteristics and Some Problems in Development for Oil Shale in Northwest China.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Yunlai Bai, et al. Geological Characteristics and Some Problems in Development for Oil Shale in Northwest China.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.