Walker-Bone, K., Dennison, E., & Cooper, C. (2001). Epidemiology of osteoporosis.
芝加哥风格引文Walker-Bone, K., E. Dennison, 与 C. Cooper. Epidemiology of Osteoporosis. 2001.
MLA引文Walker-Bone, K., et al. Epidemiology of Osteoporosis. 2001.
警告：这些引文格式不一定是100％准确.