Plunkett Foundation for Co-operative Studies. Agricultural Co-operation Organisation Chart. London: Plunkett Foundation for Co-operative Studies.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Plunkett Foundation for Co-operative Studies. Agricultural Co-operation Organisation Chart. London: Plunkett Foundation for Co-operative Studies.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Plunkett Foundation for Co-operative Studies. Agricultural Co-operation Organisation Chart. London: Plunkett Foundation for Co-operative Studies.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.