Boal, B. M. (1973). Fire is easy: The tribal Christian and his traditional culture. Christian Institute for Ethnic Studies in Asia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Boal, Barbara M. Fire Is Easy: The Tribal Christian and His Traditional Culture. Manila: Christian Institute for Ethnic Studies in Asia, 1973.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Boal, Barbara M. Fire Is Easy: The Tribal Christian and His Traditional Culture. Christian Institute for Ethnic Studies in Asia, 1973.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.