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Tchounwou, Paul B.; Yedjou, Clement G.; Patlolla, Anita K.; Sutton, Dwayne J., Luch, Andreas , 编, Heavy Metal Toxicity and the Environment, Molecular, Clinical and Environmental Toxicology 101 (Springer Basel), 2012, 101: 133–164, ISBN 9783764383398, PMC 4144270, PMID 22945569, doi:10.1007/978-3-7643-8340-4_6
Pimm, S. L.; Jenkins, C. N.; Abell, R.; Brooks, T. M.; Gittleman, J. L.; Joppa, L. N.; Raven, P. H.; Roberts, C. M.; Sexton, J. O. The biodiversity of species and their rates of extinction, distribution, and protection. Science. 2014-05-30, 344 (6187): 1246752. ISSN 0036-8075. PMID 24876501. doi:10.1126/science.1246752.
Meyer, Carrie A. Environmental NGOs in Ecuador: An Economic Analysis of Institutional Change. The Journal of Developing Areas. 1993, 27 (2): 191–210. JSTOR 4192201. PMID 12286336.
Meyer, Carrie A. Environmental NGOs in Ecuador: An Economic Analysis of Institutional Change. The Journal of Developing Areas. 1993, 27 (2): 191–210. JSTOR 4192201. PMID 12286336.
Pimm, S. L.; Jenkins, C. N.; Abell, R.; Brooks, T. M.; Gittleman, J. L.; Joppa, L. N.; Raven, P. H.; Roberts, C. M.; Sexton, J. O. The biodiversity of species and their rates of extinction, distribution, and protection. Science. 2014-05-30, 344 (6187): 1246752. ISSN 0036-8075. PMID 24876501. doi:10.1126/science.1246752.
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