Bravo, C. (1972). Evaluation practices of classroom teachers in health instruction in the elementary schools in the division of Agusan del Norte. s.n.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bravo, Concepcion. Evaluation Practices of Classroom Teachers in Health Instruction in the Elementary Schools in the Division of Agusan Del Norte. [Quezon City: s.n.], 1972.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Bravo, Concepcion. Evaluation Practices of Classroom Teachers in Health Instruction in the Elementary Schools in the Division of Agusan Del Norte. s.n.], 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.