University of Oxford. Facilities for advanced study and research in agricultural science and cognate pure sciences in the United Kingdom. Clarendon Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)University of Oxford. Facilities for Advanced Study and Research in Agricultural Science and Cognate Pure Sciences in the United Kingdom. Oxford: Clarendon Press.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)University of Oxford. Facilities for Advanced Study and Research in Agricultural Science and Cognate Pure Sciences in the United Kingdom. Clarendon Press.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.