Ashford, N., & Wright, P. H. (1979). Airport engineering. John Wiley.
Chicago Style (17th ed.) ZitazioaAshford, Norman, eta Paul H. Wright. Airport Engineering. Nueva York: John Wiley, 1979.
MLA (9th ed.) ZitazioaAshford, Norman, eta Paul H. Wright. Airport Engineering. John Wiley, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.