1. American Public Health Association , American Water Works Association and Water Pollution Control Federation , Standard methods for the examination of water and wastewater , 1905
2. Nutrient recovery from wastewater streams by microalgae: Status and prospects
3. U.S. Environmental Protection Agency , Aquatic Life Ambient Water Quality Criteria For Ammonia–Freshwater 2013 , EPA-822-R-13–001, U.S. Environmental Protection Agency , Office of Water Office of Science and Technology, Washington, DC , 2013
4. Toxicology of Aquarium Fish
5. Peer Reviewed: Internet-Scale Sensing