Walker, C. (1983). The impact of pest management bees and pollination. London: Tropical Development and research Institute.
استشهاد بنمط شيكاغوWalker, Crane. The Impact of Pest Management Bees and Pollination. London: Tropical Development and research Institute, 1983.
MLA استشهادWalker, Crane. The Impact of Pest Management Bees and Pollination. London: Tropical Development and research Institute, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.