APA (7th ed.) Citation

Sears, O. H., Pieper, J. J., & Burlison, W. L. (1933). Sweet clover in Illinois. Univ. of Ill.

Chicago Style (17th ed.) Citation

Sears, Ogle H., John J. Pieper, and William L. Burlison. Sweet Clover in Illinois. Urbana, Ill: Univ. of Ill, 1933.

MLA (9th ed.) Citation

Sears, Ogle H., et al. Sweet Clover in Illinois. Univ. of Ill, 1933.