APA

United States, . (19). Line-oriented flight training programs. [Washington, D.C: .

Chicago

United States, . 19. Line-oriented flight training programs. [Washington, D.C: .

Harvard

United States, . (19). Line-oriented flight training programs. [Washington, D.C: .

MLA

United States, . Line-oriented flight training programs. [Washington, D.C: . 19.