Gray, B. S. (1969). A study of the influence of genetic, agronomic and environmental factors on the growth, flowering and bunch production of the oil palm on the West coast of West Malaysia. University of Aberdeen.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gray, B. S. A Study of the Influence of Genetic, Agronomic and Environmental Factors on the Growth, Flowering and Bunch Production of the Oil Palm on the West Coast of West Malaysia. Aberdeen: University of Aberdeen, 1969.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gray, B. S. A Study of the Influence of Genetic, Agronomic and Environmental Factors on the Growth, Flowering and Bunch Production of the Oil Palm on the West Coast of West Malaysia. University of Aberdeen, 1969.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.