Maue, Thomas, and Monika Springer. 2008. “Effect of Methodology and Sampling Time on the Taxa Richness of Aquatic Macroinvertebrates and Subsequent Changes in the Water Quality Index from Three Tropical Rivers, Costa Rica”. Revista De Biología Tropical 56 (S4):257–271. https://doi.org/10.15517/rbt.v56i4.27231.