APA

United States, . (1987). IRS/Treasury: tax withholding systems used by U.S. tax treaty partners. [Washington, D.C: .

Chicago

United States, . 1987. IRS/Treasury: tax withholding systems used by U.S. tax treaty partners. [Washington, D.C: .

Harvard

United States, . (1987). IRS/Treasury: tax withholding systems used by U.S. tax treaty partners. [Washington, D.C: .

MLA

United States, . IRS/Treasury: tax withholding systems used by U.S. tax treaty partners. [Washington, D.C: . 1987.