APA

United States, . (1979). Certification and operation of amateur-built aircraft. [Washington, D.C: .

Chicago

United States, . 1979. Certification and operation of amateur-built aircraft. [Washington, D.C: .

Harvard

United States, . (1979). Certification and operation of amateur-built aircraft. [Washington, D.C: .

MLA

United States, . Certification and operation of amateur-built aircraft. [Washington, D.C: . 1979.