APA (7a ed.)

Zhang, S., Hao, Z., Xie, C., Bai, L., Ru, G., Lu, Z., Li, X., Zhang, D., Xie, Z., Liang, X., Li, M., & Ci, X. (2011). Genetic contribution to advanced yield for maize hybrids released from 1970 to 2000 in China / Xiaoke Ci ; Mingshun Li ; Xiaoling Liang ... [et al.]. Crop Science, 51(1).