Gaya APA

Shen, F, H., Shaffrey, C, I. (2010). ARTHRITIS & ARTHROPLASTY : The Spine . Philadelphia: Sounders.

Gaya MLA

Shen, Francis, H.., Shaffrey, Christopher, I.. "ARTHRITIS & ARTHROPLASTY : The Spine". Philadelphia: Sounders, 2010. Text.