APA (7th ed.) Citation

Schey, O. W., & Biermann, A. E. (1931). The effect of valve timing upon the performance of a supercharged engine at altitude and an unsupercharged engine at sea level. NACA.

Chicago Style (17th ed.) Citation

Schey, Oscar W., and Arnold E. Biermann. The Effect of Valve Timing upon the Performance of a Supercharged Engine at Altitude and an Unsupercharged Engine at Sea Level. Washington: NACA, 1931.

MLA (9th ed.) Citation

Schey, Oscar W., and Arnold E. Biermann. The Effect of Valve Timing upon the Performance of a Supercharged Engine at Altitude and an Unsupercharged Engine at Sea Level. NACA, 1931.