Παραπομπή APA

Williams, P. C. (1965). lumbosacral spine. McGraw-Hill.

Παραπομπή Chicago Style

Williams, Paul C. Lumbosacral Spine. London: McGraw-Hill, 1965.

Παραπομπή MLA

Williams, Paul C. Lumbosacral Spine. McGraw-Hill, 1965.