Strain, S. R., Leung, K., Whittam, T. S., de Bruijn, F. J., & Bottomley, P. J. (1994). Genetic Structure of Rhizobium leguminosarum biovar trifolii and viciae Populations Found in Two Oregon Soils under Different Plant Communities.

Strain, Steven R., Kamtin Leung, Thomas S. Whittam, Frans J. de Bruijn, et Peter J. Bottomley. Genetic Structure of Rhizobium Leguminosarum Biovar Trifolii and Viciae Populations Found in Two Oregon Soils Under Different Plant Communities. 1994.

Strain, Steven R., et al. Genetic Structure of Rhizobium Leguminosarum Biovar Trifolii and Viciae Populations Found in Two Oregon Soils Under Different Plant Communities. 1994.