APA (7th ed.) Citation

(1918). Regulations No. 33 (revised) governing collection of income tax imposed by Act of Sept. 8, 1916, as amended by Act of Oct. 3, 1917. GPO.

Chicago Style (17th ed.) Citation

Regulations No. 33 (revised) Governing Collection of Income Tax Imposed by Act of Sept. 8, 1916, as Amended by Act of Oct. 3, 1917. [Washington]: GPO, 1918.

MLA (9th ed.) Citation

Regulations No. 33 (revised) Governing Collection of Income Tax Imposed by Act of Sept. 8, 1916, as Amended by Act of Oct. 3, 1917. GPO, 1918.