APA

Garcia M. J., Library of Congress, . (2018). Barriers along the U.S. borders: key authorities and requirements. [Washington, D.C.]: Congressional Research Service.

Chicago

Garcia Michael John, Library of Congress, . 2018. Barriers along the U.S. borders: key authorities and requirements. [Washington, D.C.]: Congressional Research Service.

Harvard

Garcia M. J., Library of Congress, . (2018). Barriers along the U.S. borders: key authorities and requirements. [Washington, D.C.]: Congressional Research Service.

MLA

Garcia Michael John, Library of Congress, . Barriers along the U.S. borders: key authorities and requirements. [Washington, D.C.]: Congressional Research Service. 2018.