Cite
Taxonomy of Xanthomonas and Pseudomonas.
MLA
Colwell, R. R., and J. Liston. “Taxonomy of Xanthomonas and Pseudomonas.” Nature, vol. 191, no. 4788, Aug. 1961, pp. 617–19. EBSCOhost, https://doi.org/10.1038/191617a0.
APA
Colwell, R. R., & Liston, J. (1961). Taxonomy of Xanthomonas and Pseudomonas. Nature, 191(4788), 617–619. https://doi.org/10.1038/191617a0
Chicago
Colwell, R. R., and J. Liston. 1961. “Taxonomy of Xanthomonas and Pseudomonas.” Nature 191 (4788): 617–19. doi:10.1038/191617a0.