APA

Margaret E. O., Maria F., . (20110609). Commentary on reference values on the 6-minute walk test for children living in the United States. : Pediatric physical therapy : the official publication of the Section on Pediatrics of the American Physical Therapy Association.

Chicago

Margaret E O'neil, Maria Fragala-Pinkham, . 20110609. Commentary on reference values on the 6-minute walk test for children living in the United States. : Pediatric physical therapy : the official publication of the Section on Pediatrics of the American Physical Therapy Association.

Harvard

Margaret E. O., Maria F., . (20110609). Commentary on reference values on the 6-minute walk test for children living in the United States. : Pediatric physical therapy : the official publication of the Section on Pediatrics of the American Physical Therapy Association.

MLA

Margaret E O'neil, Maria Fragala-Pinkham, . Commentary on reference values on the 6-minute walk test for children living in the United States. : Pediatric physical therapy : the official publication of the Section on Pediatrics of the American Physical Therapy Association. 20110609.