توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Houmy, K. (2013). Agricultural mechanization in sub-Saharan Africa: Guidelines for preparing a strategy. Plant Production and Protection Division, Food and Agriculture Organization of the United Nations.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Houmy, Karim. Agricultural Mechanization in Sub-Saharan Africa: Guidelines for Preparing a Strategy. Rome: Plant Production and Protection Division, Food and Agriculture Organization of the United Nations, 2013.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Houmy, Karim. Agricultural Mechanization in Sub-Saharan Africa: Guidelines for Preparing a Strategy. Plant Production and Protection Division, Food and Agriculture Organization of the United Nations, 2013.