Conference on Critical Loads : Grange-over-Sands, England, Institute of Terrestrial Ecology, British Ecological Society Industrial Ecology Group, Natural Environment Research Council, Hornung, M., & Skeffington, R. A. (1993). Critical loads: Concept and applications : proceedings of a conference held on 12-14 February 1992 in Grange-over-Sands. HMSO.
Παραπομπή σε μορφή Chicago (17η εκδ.)Conference on Critical Loads : Grange-over-Sands, England, Institute of Terrestrial Ecology, British Ecological Society Industrial Ecology Group, Natural Environment Research Council, M. Hornung, και R. A. Skeffington. Critical Loads: Concept and Applications : Proceedings of a Conference Held on 12-14 February 1992 in Grange-over-Sands. London: HMSO, 1993.
Παραπομπή σε μορφή MLA (9th εκδ.)Conference on Critical Loads : Grange-over-Sands, England, et al. Critical Loads: Concept and Applications : Proceedings of a Conference Held on 12-14 February 1992 in Grange-over-Sands. HMSO, 1993.