APA (7th ed.) Citation

United States. Post Office Department & ProQuest (Firm). (1911). Letters from the Postmaster General to Hon. Boies Penrose relative to increase of postage rates on periodical publications mailed as second-class matter. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letters from the Postmaster General to Hon. Boies Penrose Relative to Increase of Postage Rates on Periodical Publications Mailed as Second-class Matter. Washington: [publisher not identified], 1911.

MLA (9th ed.) Citation

United States. Post Office Department and ProQuest (Firm). Letters from the Postmaster General to Hon. Boies Penrose Relative to Increase of Postage Rates on Periodical Publications Mailed as Second-class Matter. [publisher not identified], 1911.