S.P., T., & Veer, A. A. d. (1982). Perspective in landscape ecology: Proceedings of the International Congress Organized by the Netherlands Society for landscape ecology, Veldhoven, the Netherlands, April 6-11, 1981. Centre for Agricultural Pub. and Documentation.

S.P., Tjallingii, juo A. A. de Veer. Perspective in Landscape Ecology: Proceedings of the International Congress Organized by the Netherlands Society for Landscape Ecology, Veldhoven, the Netherlands, April 6-11, 1981. Wageningen: Centre for Agricultural Pub. and Documentation, 1982.

S.P., Tjallingii, juo A. A. de Veer. Perspective in Landscape Ecology: Proceedings of the International Congress Organized by the Netherlands Society for Landscape Ecology, Veldhoven, the Netherlands, April 6-11, 1981. Centre for Agricultural Pub. and Documentation, 1982.