APA Style

Firestein, G, S. et al (2009). Kelley’s textbook of rheumatology.vol.02. (8th ed.). Philadelphia: Saunders Elsevier.

MLA Style

Firestein, Gary, S. et al. "Kelley’s textbook of rheumatology.vol.02.". 8th ed. Philadelphia: Saunders Elsevier, 2009. Text.