APA

Kirchhoff S. M., Duff J. H. & Library of Congress. (2019). Medicare coverage of opioid addiction treatment services. [Washington, D.C.]: Congressional Research Service.

Chicago

Kirchhoff Suzanne M, Duff Johnathan H and Library of Congress. 2019. Medicare coverage of opioid addiction treatment services. [Washington, D.C.]: Congressional Research Service.

Harvard

Kirchhoff S. M., Duff J. H. and Library of Congress. (2019). Medicare coverage of opioid addiction treatment services. [Washington, D.C.]: Congressional Research Service.

MLA

Kirchhoff Suzanne M, Duff Johnathan H and Library of Congress. Medicare coverage of opioid addiction treatment services. [Washington, D.C.]: Congressional Research Service. 2019.