APA

United States, . (1948). Internal Revenue Code, 1948 draft. [Washington, D.C.]: .

Chicago

United States, . 1948. Internal Revenue Code, 1948 draft. [Washington, D.C.]: .

Harvard

United States, . (1948). Internal Revenue Code, 1948 draft. [Washington, D.C.]: .

MLA

United States, . Internal Revenue Code, 1948 draft. [Washington, D.C.]: . 1948.