Iowa State Vegetable Growers' Association, Iowa Potato and Truck Growers' Association, & Iowa State Horticultural Society. Annual report of the Iowa State Vegetable Growers' Association. Iowa State Horticultural Society [etc.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Iowa State Vegetable Growers' Association, Iowa Potato and Truck Growers' Association, و Iowa State Horticultural Society. Annual Report of the Iowa State Vegetable Growers' Association. [Iowa]: Iowa State Horticultural Society [etc.].
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Iowa State Vegetable Growers' Association, et al. Annual Report of the Iowa State Vegetable Growers' Association. Iowa State Horticultural Society [etc.].
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.