Kagya-Agyemang, J. et al. 2012. Studies on the Endocrine and Neuroendocrine Control of Broodiness in the Yuehuang Hen. International Journal of Poultry Science. 11, 8 (Jul. 2012), 488–495. DOI:https://doi.org/10.3923/ijps.2012.488.495.