APA (7th ed.) Citation

Siepmann, H., & Siepmann, H. R. (1987). Echo of the guns: Recollections of an artillery officer, 1914-18. Hale.

Chicago Style (17th ed.) Citation

Siepmann, Harry, and H. R. Siepmann. Echo of the Guns: Recollections of an Artillery Officer, 1914-18. London: Hale, 1987.

MLA (9th ed.) Citation

Siepmann, Harry, and H. R. Siepmann. Echo of the Guns: Recollections of an Artillery Officer, 1914-18. Hale, 1987.