APA

Villagrana M. A., Library of Congress, . (2018). Medicare, obervation care, and the two-midnight rule. [Washington, D.C.]: Congressional Research Service.

Chicago

Villagrana Marco A, Library of Congress, . 2018. Medicare, obervation care, and the two-midnight rule. [Washington, D.C.]: Congressional Research Service.

Harvard

Villagrana M. A., Library of Congress, . (2018). Medicare, obervation care, and the two-midnight rule. [Washington, D.C.]: Congressional Research Service.

MLA

Villagrana Marco A, Library of Congress, . Medicare, obervation care, and the two-midnight rule. [Washington, D.C.]: Congressional Research Service. 2018.