APA

United States, . (1977). Flight operations in oceanic airspace. [Washington, D.C: .

Chicago

United States, . 1977. Flight operations in oceanic airspace. [Washington, D.C: .

Harvard

United States, . (1977). Flight operations in oceanic airspace. [Washington, D.C: .

MLA

United States, . Flight operations in oceanic airspace. [Washington, D.C: . 1977.