Alabama. Dept. of Agriculture and Industries. Division of Plant Industry. (1943). Certification of seed sweet potatoes and sweet potato plants (Rev.). The Division.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Alabama. Dept. of Agriculture and Industries. Division of Plant Industry. Certification of Seed Sweet Potatoes and Sweet Potato Plants. Rev. Montgomery, Ala.: The Division, 1943.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Alabama. Dept. of Agriculture and Industries. Division of Plant Industry. Certification of Seed Sweet Potatoes and Sweet Potato Plants. Rev. The Division, 1943.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.