United States. Department of the Treasury. (1920). Internal Revenue manual for information and guidance of collectors and their employees: Part I. Administrative procedure. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of the Treasury. Internal Revenue Manual for Information and Guidance of Collectors and Their Employees: Part I. Administrative Procedure. [Washington]: GPO, 1920.
MLA (9th ed.) CitationUnited States. Department of the Treasury. Internal Revenue Manual for Information and Guidance of Collectors and Their Employees: Part I. Administrative Procedure. GPO, 1920.
Warning: These citations may not always be 100% accurate.