APA

Guenther G. L., Library of Congress, . (2018). Individual income tax rates and other key elements of the federal individual income tax: 1988 to 2017. [Washington, D.C.]: Congressional Research Service.

Chicago

Guenther Gary L, Library of Congress, . 2018. Individual income tax rates and other key elements of the federal individual income tax: 1988 to 2017. [Washington, D.C.]: Congressional Research Service.

Harvard

Guenther G. L., Library of Congress, . (2018). Individual income tax rates and other key elements of the federal individual income tax: 1988 to 2017. [Washington, D.C.]: Congressional Research Service.

MLA

Guenther Gary L, Library of Congress, . Individual income tax rates and other key elements of the federal individual income tax: 1988 to 2017. [Washington, D.C.]: Congressional Research Service. 2018.