R, C. J., Christian, M., V, N. T., A, E. J., & J, S. M. (2007). Bone turnover in elderly men: Relationships to change in bone mineral density. BMC.
芝加哥风格引文R, Center Jacqueline, Meier Christian, Nguyen Tuan V, Eisman John A, 与 Seibel Markus J. Bone Turnover in Elderly Men: Relationships to Change in Bone Mineral Density. BMC, 2007.
MLA引文R, Center Jacqueline, et al. Bone Turnover in Elderly Men: Relationships to Change in Bone Mineral Density. BMC, 2007.
警告：这些引文格式不一定是100％准确.