(1991). Booker tropical soil manual: A hand book for soil survey and agricultural land evaluation in the tropics and Subtropics. New York: Longman Scientific & Technical.
استشهاد بنمط شيكاغوBooker Tropical Soil Manual: A Hand Book for Soil Survey and Agricultural Land Evaluation in the Tropics and Subtropics. New York: Longman Scientific & Technical, 1991.
MLA استشهادBooker Tropical Soil Manual: A Hand Book for Soil Survey and Agricultural Land Evaluation in the Tropics and Subtropics. New York: Longman Scientific & Technical, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.