Houlahan, J. E.; Keddy, P. A.; Makkay, K.; Findlay, C. S. (2006). "The effects of adjacent land use on wetland species richness and community composition". Wetlands. 26 (1): 79–96. doi:10.1672/0277-5212(2006)26[79:TEOALU]2.0.CO;2. S2CID8050261.
Houlahan, J. E.; Keddy, P. A.; Makkay, K.; Findlay, C. S. (2006). "The effects of adjacent land use on wetland species richness and community composition". Wetlands. 26 (1): 79–96. doi:10.1672/0277-5212(2006)26[79:TEOALU]2.0.CO;2. S2CID8050261.