APA (7th ed.) Citation

Pinkel, B., & Ellerbrock, H. H. (1940). Correlation of cooling data from an air-cooled cylinder and several multicylinder engines. NACA.

Chicago Style (17th ed.) Citation

Pinkel, Benjamin, and Herman H. Ellerbrock. Correlation of Cooling Data from an Air-cooled Cylinder and Several Multicylinder Engines. Washington: NACA, 1940.

MLA (9th ed.) Citation

Pinkel, Benjamin, and Herman H. Ellerbrock. Correlation of Cooling Data from an Air-cooled Cylinder and Several Multicylinder Engines. NACA, 1940.

Warning: These citations may not always be 100% accurate.