Society of Wetland Scientists Professional Certification Program. (1998). Registry of professional wetland scientists: 1997-1998. U.S.A: The Program.
Chicago Style CitationSociety of Wetland Scientists Professional Certification Program. Registry of Professional Wetland Scientists: 1997-1998. U.S.A: The Program, 1998.
MLA CitationSociety of Wetland Scientists Professional Certification Program. Registry of Professional Wetland Scientists: 1997-1998. U.S.A: The Program, 1998.
Warning: These citations may not always be 100% accurate.