South African Military History Society - Journal - HEAVY GUSTAV

Sea History 029 - Autumn 1983 by National Maritime Historical Society & Sea History Magazine - Issuu

Big Bertha (howitzer) - Wikipedia

Sea History 182 - Spring 2023 by National Maritime Historical Society & Sea History Magazine - Issuu

South African Military History Society - Journal - HEAVY GUSTAV - The Story of a Gun

Long Shadows: Truth, Lies and History by Paris, Erna

Remembering the 24th: Part of the Community — Patriotic Events, by Greg Martin

U.S. Marines gather for after action review comments from South African Army Brig. Gen. Gustav Lategan following a Peacekeeping scenario at Southern Accord 17, at the South African Army Combat Training Center

South African Military History Society - Journal- Guns in South Africa 1899-1902

Afghanistan: Perspectives on the Soviet War - Odd Arne Westad, 1989

Full article: Communist History: An Annual Bibliography (2006)