Study Week on Natural Products and the Protection of Plants & Marini-Bettolo, G. (1977). Natural products and the protection of plants: Proceedings. Elsevier Scientific Publishing Company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Study Week on Natural Products and the Protection of Plants و G.B Marini-Bettolo. Natural Products and the Protection of Plants: Proceedings. Amsterdam: Elsevier Scientific Publishing Company, 1977.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Study Week on Natural Products and the Protection of Plants و G.B Marini-Bettolo. Natural Products and the Protection of Plants: Proceedings. Elsevier Scientific Publishing Company, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.