Medicare : Payments to Physicians.
MLA
Library of Congress. Medicare : Payments to Physicians. [Place of publication not identified] : [publisher not identified], 2008.
APA
Library of Congress. (2008). Medicare : Payments to Physicians. [Place of publication not identified] : [publisher not identified].
Chicago
Library of Congress. Medicare : Payments to Physicians. [Place of publication not identified] : [publisher not identified], 2008.