Chicago

Hannaway, D. B., Steve Fransen, James B Cropper, Merle Teel, Marty Chaney, Tom Griggs, Richard R Halse et al. 1999. Annual Ryegrass (lolium Multiflorum Lam.). : [Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service.