Miao, Z.H., P.C. Glatz, Y.J. Ru, S.K. Wyatt, and B.J. Rodda. 2005. “Integrating Free-Range Hens into a Wheat Stubble”. International Journal of Poultry Science 4 (8): 526–530. https://doi.org/10.3923/ijps.2005.526.530.