Ng, J. Z. (1986). The effectiveness of the guided discovery method and the telling method in the teaching of geography at secondary one level.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ng, Ju Zang. The Effectiveness of the Guided Discovery Method and the Telling Method in the Teaching of Geography at Secondary One Level. 1986.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ng, Ju Zang. The Effectiveness of the Guided Discovery Method and the Telling Method in the Teaching of Geography at Secondary One Level. 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.