APA (7th ed.) Citation

Jackobs, J. A., Peck, T. R., & Walker, W. M. (1970). Efficiency of fertilizer topdressing on alfalfa. Univ. of Ill.

Chicago Style (17th ed.) Citation

Jackobs, Joseph A., Theodore R. Peck, and W. M. Walker. Efficiency of Fertilizer Topdressing on Alfalfa. Urbana, Ill: Univ. of Ill, 1970.

MLA (9th ed.) Citation

Jackobs, Joseph A., et al. Efficiency of Fertilizer Topdressing on Alfalfa. Univ. of Ill, 1970.