Technical Centre for Agricultural and Rural Cooperation (Ede, Netherlands), International Institute of Tropical Agriculture, Workshop on "Biotechnology: Enhancing Research on Tropical Crops in Africa", & Thottappilly, G. (1992). Biotechnology: Enhancing research on tropical crops in Africa. Technical Centre for Agricultural and Rural Cooperation ; International Institute of Tropical Agriculture.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Technical Centre for Agricultural and Rural Cooperation (Ede, Netherlands), International Institute of Tropical Agriculture, Workshop on "Biotechnology: Enhancing Research on Tropical Crops in Africa", و G. Thottappilly. Biotechnology: Enhancing Research on Tropical Crops in Africa. Wageningen, Netherlands : Ibadan, Nigeria: Technical Centre for Agricultural and Rural Cooperation ; International Institute of Tropical Agriculture, 1992.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Technical Centre for Agricultural and Rural Cooperation (Ede, Netherlands), et al. Biotechnology: Enhancing Research on Tropical Crops in Africa. Technical Centre for Agricultural and Rural Cooperation ; International Institute of Tropical Agriculture, 1992.