Ho, Y. K. (1997). Level of inquiry of activities in form two science textbooks and its relationship with the acquisition of science process skills.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ho, Yoon Kam. Level of Inquiry of Activities in Form Two Science Textbooks and Its Relationship with the Acquisition of Science Process Skills. 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ho, Yoon Kam. Level of Inquiry of Activities in Form Two Science Textbooks and Its Relationship with the Acquisition of Science Process Skills. 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.