Gaya APA
Cassidy, J, T., Laxer, R, M. (2011).
textbook of pediatric rheumatology (Ed.6).
philadhelphia:
saunder, elsevier.
Gaya MLA
Cassidy, James, T.., Laxer, Ronald, M..
"textbook of pediatric rheumatology".
Ed.6
philadhelphia:
saunder, elsevier,
2011.
Text.