APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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