United Dairy Association of Washington & Northwest Dairyman and Farmer Company. (1921). Northwest dairyman and farmer. United Dairy Association of Washington.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United Dairy Association of Washington و Northwest Dairyman and Farmer Company. Northwest Dairyman and Farmer. Seattle, Wash.: United Dairy Association of Washington, 1921.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United Dairy Association of Washington و Northwest Dairyman and Farmer Company. Northwest Dairyman and Farmer. United Dairy Association of Washington, 1921.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.