APA (7th ed.) Citation

United States. Postmaster General. (1909). Regulations governing appointment of 4th-class postmasters. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Postmaster General. Regulations Governing Appointment of 4th-class Postmasters. Washington, D.C.: [publisher not identified], 1909.

MLA (9th ed.) Citation

United States. Postmaster General. Regulations Governing Appointment of 4th-class Postmasters. [publisher not identified], 1909.

Warning: These citations may not always be 100% accurate.