Deismireacht APA

Trimble, W. F. (1982). High frontier: A history of aeronautics in Pennsylvania. Pittsburgh, Pa: University of Pittsburgh Press.

Trích dẫn kiểu Chicago

Trimble, William F. High Frontier: A History of Aeronautics in Pennsylvania. Pittsburgh, Pa: University of Pittsburgh Press, 1982.

Deismireacht MLA

Trimble, William F. High Frontier: A History of Aeronautics in Pennsylvania. Pittsburgh, Pa: University of Pittsburgh Press, 1982.

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