MLA

Silva, Matthew J, and X. Edward Guo. Skeletal Aging and Osteoporosis. Springer Berlin Heidelberg, 2013.

APA

Silva, M. J, & Guo, X. Edward. (2013). Skeletal Aging and Osteoporosis. Springer Berlin Heidelberg.

Chicago

Silva, Matthew J., and X. Edward Guo. Skeletal Aging and Osteoporosis. : Springer Berlin Heidelberg, 2013.