Ecological Foundations of Sustainable Agriculture (WEFSA 1) : London) & Hawksworth, D. L. (1991). The biodiversity of microorganisms and invertebrates: Its role in sustainable agriculture : proceedings of the First Workshop on the Ecological Foundations of Sustainable Agriculture (WEFSA 1), London, 26-27 July 1990. CΑΒ International.
Παραπομπή σε μορφή Chicago (17η εκδ.)Ecological Foundations of Sustainable Agriculture (WEFSA 1) : London) και D. L. Hawksworth. The Biodiversity of Microorganisms and Invertebrates: Its Role in Sustainable Agriculture : Proceedings of the First Workshop on the Ecological Foundations of Sustainable Agriculture (WEFSA 1), London, 26-27 July 1990. Wallingford: CΑΒ International, 1991.
Παραπομπή σε μορφή MLA (9th εκδ.)Ecological Foundations of Sustainable Agriculture (WEFSA 1) : London) και D. L. Hawksworth. The Biodiversity of Microorganisms and Invertebrates: Its Role in Sustainable Agriculture : Proceedings of the First Workshop on the Ecological Foundations of Sustainable Agriculture (WEFSA 1), London, 26-27 July 1990. CΑΒ International, 1991.