Goyal, J. C., & Singh, A. (1977). Classroom research by teachers: A study. Dept. of Teacher Education, National Institute of Education, National Council of Educational Research & Training.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Goyal, J. C., و Ajit Singh. Classroom Research by Teachers: A Study. New Delhi: Dept. of Teacher Education, National Institute of Education, National Council of Educational Research & Training, 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Goyal, J. C., و Ajit Singh. Classroom Research by Teachers: A Study. Dept. of Teacher Education, National Institute of Education, National Council of Educational Research & Training, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.