Widmer, F., Shaffer, B. T., Porteous, L. A., & Seidler, R. J. (1999). Analysis of nifH Gene Pool Complexity in Soil and Litter at a Douglas Fir Forest Site in the Oregon Cascade Mountain Range. Appl Environ Microbiol.
शिकागो स्टाइल उद्धरणWidmer, F., B. T. Shaffer, L. A. Porteous, और R. J. Seidler. "Analysis of NifH Gene Pool Complexity in Soil and Litter At a Douglas Fir Forest Site in the Oregon Cascade Mountain Range." Appl Environ Microbiol 1999.
एमएलए उद्धरणWidmer, F., B. T. Shaffer, L. A. Porteous, और R. J. Seidler. "Analysis of NifH Gene Pool Complexity in Soil and Litter At a Douglas Fir Forest Site in the Oregon Cascade Mountain Range." Appl Environ Microbiol 1999.
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