Commonwealth Agricultural Bureaux. Executive Council. (1959). List of research workers 1959: Research workers in agriculture, animal health and forestry in the British commonwealth, the republic of the Sudan and the republic of Ireland. Executive Council of the Commonwealth Agricultural Bureaux.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Commonwealth Agricultural Bureaux. Executive Council. List of Research Workers 1959: Research Workers in Agriculture, Animal Health and Forestry in the British Commonwealth, the Republic of the Sudan and the Republic of Ireland. England: Executive Council of the Commonwealth Agricultural Bureaux, 1959.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Commonwealth Agricultural Bureaux. Executive Council. List of Research Workers 1959: Research Workers in Agriculture, Animal Health and Forestry in the British Commonwealth, the Republic of the Sudan and the Republic of Ireland. Executive Council of the Commonwealth Agricultural Bureaux, 1959.