APA

United States, . (1977). General aviation accident prevention program. [Washington, D.C: .

Chicago

United States, . 1977. General aviation accident prevention program. [Washington, D.C: .

Harvard

United States, . (1977). General aviation accident prevention program. [Washington, D.C: .

MLA

United States, . General aviation accident prevention program. [Washington, D.C: . 1977.