APA (7th ed.) Citation

Allied Forces. Army Group, 15, & Williams, R. L. (1946). 15th Army Group history, 16 December 1944-2 May 1945. [publisher not identified].

Chicago Style (17th ed.) Citation

Allied Forces. Army Group, 15, and Reginald L. Williams. 15th Army Group History, 16 December 1944-2 May 1945. [Place of publication not identified]: [publisher not identified], 1946.

MLA (9th ed.) Citation

Allied Forces. Army Group, 15, and Reginald L. Williams. 15th Army Group History, 16 December 1944-2 May 1945. [publisher not identified], 1946.