توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Zakaria Hamzah. (1984). An analysis of the relationship between output and costs of inputs in Malaysian tin mining operations. Michigan State University.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Zakaria Hamzah. An Analysis of the Relationship Between Output and Costs of Inputs in Malaysian Tin Mining Operations. East Lansing, Mich.: Michigan State University, 1984.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Zakaria Hamzah. An Analysis of the Relationship Between Output and Costs of Inputs in Malaysian Tin Mining Operations. Michigan State University, 1984.