APA (7th ed.) Citation

United States. Congress. House. Committee on Post Office and Civil Service, ProQuest (Firm), & United States Civil Service Commission. (1972). Civil Service Retirement Credit for Service as D.C. Substitute Teachers. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Congress. House. Committee on Post Office and Civil Service, ProQuest (Firm), and United States Civil Service Commission. Civil Service Retirement Credit for Service as D.C. Substitute Teachers. Washington: [publisher not identified], 1972.

MLA (9th ed.) Citation

United States. Congress. House. Committee on Post Office and Civil Service, et al. Civil Service Retirement Credit for Service as D.C. Substitute Teachers. [publisher not identified], 1972.