APA (7th ed.) Citation

United States. Postmaster General. (1923). California conference-convention, June 1923. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Postmaster General. California Conference-convention, June 1923. [Place of publication not identified]: [publisher not identified], 1923.

MLA (9th ed.) Citation

United States. Postmaster General. California Conference-convention, June 1923. [publisher not identified], 1923.

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