توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Chengula, D. H. (2018). Improving cementitious properties of blended pozzolan based materials for construction of low cost buildings in Mbeya Region, Tanzania. Kassel University Press.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Chengula, Duwa Hamisi. Improving Cementitious Properties of Blended Pozzolan Based Materials for Construction of Low Cost Buildings in Mbeya Region, Tanzania. Kassel, [Germany]: Kassel University Press, 2018.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Chengula, Duwa Hamisi. Improving Cementitious Properties of Blended Pozzolan Based Materials for Construction of Low Cost Buildings in Mbeya Region, Tanzania. Kassel University Press, 2018.