Taylor, N. L., Gibson, P. B., Gillett, J. W., Knight, W. E., Rupert, E. O., Smith, R. R., . . . Buxton, D. R. (1985). Clover science and technology. Wisconsin, Estados Unidos: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America.

Taylor, N. L.,, P. B. Gibson, J. W. Gillett, W. E. Knight, E. O. Rupert, R. R. Smith, R. W. Van Keuren, Domenic A. Fuccillo, and Dwayne R. Buxton. Clover Science and Technology. Wisconsin, Estados Unidos: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 1985.

Taylor, N. L.,, et al. Clover Science and Technology. Wisconsin, Estados Unidos: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 1985.