West, J. Y. (1937). The technique for appraising certain observable behavior of children in science in elementary schools. Teachers College, Columbia University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)West, Joe Young. The Technique for Appraising Certain Observable Behavior of Children in Science in Elementary Schools. New York, New York: Teachers College, Columbia University, 1937.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)West, Joe Young. The Technique for Appraising Certain Observable Behavior of Children in Science in Elementary Schools. Teachers College, Columbia University, 1937.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.