Παραπομπή APA

Walker, C. (1983). The impact of pest management bees and pollination. London: Tropical Development and research Institute.

Παραπομπή Chicago Style

Walker, Crane. The Impact of Pest Management Bees and Pollination. London: Tropical Development and research Institute, 1983.

Παραπομπή MLA

Walker, Crane. The Impact of Pest Management Bees and Pollination. London: Tropical Development and research Institute, 1983.

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