APA (7th ed.) Citation

Hobbs, L. S. (1971). The Wright brothers' engines and their design. Smithsonian Inst.

Chicago Style (17th ed.) Citation

Hobbs, Leonard S. The Wright Brothers' Engines and Their Design. Washington, DC: Smithsonian Inst, 1971.

MLA (9th ed.) Citation

Hobbs, Leonard S. The Wright Brothers' Engines and Their Design. Smithsonian Inst, 1971.

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