APA (7th ed.) Citation

Armstrong, C. (2020). Orkney and Scapa Flow at war 1939-45. Pen & Sword Military.

Chicago Style (17th ed.) Citation

Armstrong, Craig. Orkney and Scapa Flow at War 1939-45. Barnsley: Pen & Sword Military, 2020.

MLA (9th ed.) Citation

Armstrong, Craig. Orkney and Scapa Flow at War 1939-45. Pen & Sword Military, 2020.

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