APA (7th ed.) Citation

Sweetser, A., & Lamont, G. (2007). Opportunities in Aviation. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sweetser, Arthur, and Gordon Lamont. Opportunities in Aviation. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Sweetser, Arthur, and Gordon Lamont. Opportunities in Aviation. Project Gutenberg, 2007.

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