APA引文

Roper, D. C. (1917). The United States post office: Its past record, present condition, and potential relation to the new world era. Funk & Wagnalls company.

Chicago Style (17th ed.) Citation

Roper, Daniel C. The United States Post Office: Its Past Record, Present Condition, and Potential Relation to the New World Era. New York and London: Funk & Wagnalls company, 1917.

MLA引文

Roper, Daniel C. The United States Post Office: Its Past Record, Present Condition, and Potential Relation to the New World Era. Funk & Wagnalls company, 1917.