APA (7th ed.) Citation

Weick, F. E. Drag and cooling with various forms of cowling for a "whirlwind" radial air-cooled engine. NACA.

Chicago Style (17th ed.) Citation

Weick, Fred E. Drag and Cooling with Various Forms of Cowling for a "Whirlwind" Radial Air-cooled Engine. Washington: NACA.

MLA (9th ed.) Citation

Weick, Fred E. Drag and Cooling with Various Forms of Cowling for a "Whirlwind" Radial Air-cooled Engine. NACA.