APA (7th ed.) Citation

(1917). Engineer training manual, U.S. Army: Preface, introduction, and Part I. Principles of training. GPO.

Chicago Style (17th ed.) Citation

Engineer Training Manual, U.S. Army: Preface, Introduction, and Part I. Principles of Training. [Washington]: GPO, 1917.

MLA (9th ed.) Citation

Engineer Training Manual, U.S. Army: Preface, Introduction, and Part I. Principles of Training. GPO, 1917.