International Congress of Ecology The Hague, the Netherlands, Dobben, W. H. v., & McConnell, R. (1975). Unifying concepts in ecology: Report of the plenary sessions of the first international congress of ecology, The Hage, The Netherlands, September 8-14, 1974. Dr W. Junk B. V..
Παραπομπή σε μορφή Chicago (17η εκδ.)International Congress of Ecology The Hague, the Netherlands, W. H. van Dobben, και Ro McConnell. Unifying Concepts in Ecology: Report of the Plenary Sessions of the First International Congress of Ecology, The Hage, The Netherlands, September 8-14, 1974. Hague: Dr W. Junk B. V., 1975.
Παραπομπή σε μορφή MLA (9th εκδ.)International Congress of Ecology The Hague, the Netherlands, et al. Unifying Concepts in Ecology: Report of the Plenary Sessions of the First International Congress of Ecology, The Hage, The Netherlands, September 8-14, 1974. Dr W. Junk B. V., 1975.