APA Style

Kelley, W, N. et al (1993). Textbook of Rheumatology. Vol.2 (4th ed). Philadelphia: W.B Saunders Company.

MLA Style

Kelley, William, N. et al. "Textbook of Rheumatology. Vol.2". 4th ed Philadelphia: W.B Saunders Company, 1993. print.