APA (7th ed.) Citation

(1990). The US army: 1890 - 1920. Osprey Publ.

Chicago Style (17th ed.) Citation

The US Army: 1890 - 1920. London: Osprey Publ, 1990.

MLA (9th ed.) Citation

The US Army: 1890 - 1920. Osprey Publ, 1990.

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