USEPA manual of methods for virology :
chapter 13.
APA Citation
United States. Environmental Protection Agency. Office of Research and Development. (1993). USEPA manual of methods for virology: chapter 13. Revision. Washington, DC: U.S. Environmental Protection Agency, Office of Research and Development.
MLA Citation
United States. Environmental Protection Agency. Office of Research and Development. USEPA Manual of Methods for Virology: Chapter 13. Revision. Washington, DC: U.S. Environmental Protection Agency, Office of Research and Development, 1993.
Warning: These citations may not always be complete (especially for serials).