APA

United States, . (1977). VHF radio frequency assignment plan for aeronautical operations. [Washington, D.C: .

Chicago

United States, . 1977. VHF radio frequency assignment plan for aeronautical operations. [Washington, D.C: .

Harvard

United States, . (1977). VHF radio frequency assignment plan for aeronautical operations. [Washington, D.C: .

MLA

United States, . VHF radio frequency assignment plan for aeronautical operations. [Washington, D.C: . 1977.