International Symposium on Aphids (5o, Dixon, A. F., & Nieto Nafría, J. M. (1998). Aphids in natural and managed ecosystems: [proceedings of the Fifth International Symposium on Aphids, September 15th-19th, 1997]. Universidad, Secretariado de Publicaciones.
Chicago Style (17th ed.) CitationInternational Symposium on Aphids (5o, Anthony F.G Dixon, and Juan M. Nieto Nafría. Aphids in Natural and Managed Ecosystems: [proceedings of the Fifth International Symposium on Aphids, September 15th-19th, 1997]. León: Universidad, Secretariado de Publicaciones, 1998.
MLA (9th ed.) CitationInternational Symposium on Aphids (5o, et al. Aphids in Natural and Managed Ecosystems: [proceedings of the Fifth International Symposium on Aphids, September 15th-19th, 1997]. Universidad, Secretariado de Publicaciones, 1998.