APA (7th ed.) Citation

Field, R. (2009). Petersburg 1864 - 65: The longest siege (1. publ. in Great Britain.). Osprey Publ.

Chicago Style (17th ed.) Citation

Field, Ron. Petersburg 1864 - 65: The Longest Siege. 1. publ. in Great Britain. Oxford [u.a.]: Osprey Publ, 2009.

MLA (9th ed.) Citation

Field, Ron. Petersburg 1864 - 65: The Longest Siege. 1. publ. in Great Britain. Osprey Publ, 2009.