Saad, M. S. (1993). Variability, Divergence, Heterosis, Combining Ability and Yield Component Studies in Sweet Potatoes (Ipomoea Batatas (L) Lam.) from Sabah and Sarawak, Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Saad, Mohd Said. Variability, Divergence, Heterosis, Combining Ability and Yield Component Studies in Sweet Potatoes (Ipomoea Batatas (L) Lam.) from Sabah and Sarawak, Malaysia. 1993.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Saad, Mohd Said. Variability, Divergence, Heterosis, Combining Ability and Yield Component Studies in Sweet Potatoes (Ipomoea Batatas (L) Lam.) from Sabah and Sarawak, Malaysia. 1993.
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