APA (7th ed.) Citation

Trimble, W. F. High Frontier: A History of Aeronautics in Pennsylvania. University of Pittsburgh Press.

Chicago Style (17th ed.) Citation

Trimble, William F. High Frontier: A History of Aeronautics in Pennsylvania. Pittsburgh, Pa.: University of Pittsburgh Press.

MLA (8th ed.) Citation

Trimble, William F. High Frontier: A History of Aeronautics in Pennsylvania. University of Pittsburgh Press.

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