APA (7th ed.) Citation

Zimmermann, C. F., & Keefe, C. W. (1997). Method 365.5: Determination of Orthophosphate in Estuarine and Coastal Waters by Automated Colorimetric Analysis (Revision 1.4.). United States Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory.

Chicago Style (17th ed.) Citation

Zimmermann, Carl F., and Carolyn W. Keefe. Method 365.5: Determination of Orthophosphate in Estuarine and Coastal Waters by Automated Colorimetric Analysis. Revision 1.4. [Cincinnati, Ohio]: United States Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, 1997.

MLA (9th ed.) Citation

Zimmermann, Carl F., and Carolyn W. Keefe. Method 365.5: Determination of Orthophosphate in Estuarine and Coastal Waters by Automated Colorimetric Analysis. Revision 1.4. United States Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, 1997.