APA (7th ed.) Citation

Gravatt, L. (1928). Pioneers of the air. Mentzer, Bush & co..

Chicago Style (17th ed.) Citation

Gravatt, Lila. Pioneers of the Air. New York : Chicago: Mentzer, Bush & co., 1928.

MLA (8th ed.) Citation

Gravatt, Lila. Pioneers of the Air. Mentzer, Bush & co., 1928.

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