APA (7th ed.) Citation

Krueger, W. G. (2011). Lecture on Artificial Flight Given by request at the Academy of Natural Sciences. Project Gutenberg.

Chicago Style (17th ed.) Citation

Krueger, Wm. G. Lecture on Artificial Flight Given by Request at the Academy of Natural Sciences. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Krueger, Wm. G. Lecture on Artificial Flight Given by Request at the Academy of Natural Sciences. Project Gutenberg, 2011.

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