APA (7e ed.) Bronvermelding

Firestein, G. S., & Kelley, W. N. (2013). Kelley's textbook of rheumatology (9th ed.). Elsevier/Saunders.

Chicago (17e ed.) Bronvermelding

Firestein, Gary S., en William N. Kelley. Kelley's Textbook of Rheumatology. 9th ed. Philadelphia, PA: Elsevier/Saunders, 2013.

MLA (9e ed.) Bronvermelding

Firestein, Gary S., en William N. Kelley. Kelley's Textbook of Rheumatology. 9th ed. Elsevier/Saunders, 2013.