APA

United States, . (19). Advisory circular: Federal Aviation Administration. [Washington, D.C: .

Chicago

United States, . 19. Advisory circular: Federal Aviation Administration. [Washington, D.C: .

Harvard

United States, . (19). Advisory circular: Federal Aviation Administration. [Washington, D.C: .

MLA

United States, . Advisory circular: Federal Aviation Administration. [Washington, D.C: . 19.