1. APHA. (1998). 10200H chlorophyll. In: standard methods for the examination of water and wastewater. In L. S. Clesceri, A. E. Greenberg, and A. D. Eaton (Eds.) (20th ed.). Washington, D.C.: American Public Health Association, American Water Works Association, Water Environment Federation.
2. APHA (2012). Section 1060, Collection and Preservation of Samples. In: Standard Methods for the Examination of Water and Wastewater. In Eugene W. Rice, Rodger B. Baird, Andrew D. Eaton, and L. S. Clesceri (Eds.), (22nd ed., pp. 1360). Washington, D.C.: American Public Health Association, American Water Works Association, Water Environment Federation.
3. Arar, E. J. (1997a). Method 446.0: In vitro determination of chlorophylls a, b, c + c and pheopigments in 1 2 marine and freshwater algae by. In Visible spectrophotometry. Washington, DC: U.S. Environmental Protection Agency.
4. Arar, E. J. (1997b). Method 447.0 - determination of chlorophylls a and b and identification of other pigments of interest in marine and freshwater algae using high performance liquid chromatography with visible wavelength detection. Washington, Dc: U.S. Environmental Protection Agency.
5. Arar, E. J., & Collins, G. B. (1997). Method 445.0 in vitro determination of chlorophyll a and pheophytin Ain marine and freshwater algae by fluorescence. Washington, DC: U.S. Environmental Protection Agency.