APA (7e ed.) Bronvermelding

(1994). Aviation Crossroads Challenges In A Changing World Proceedings Of The 23rd Air Transport Conference. American Socity of Civil Engineers.

Chicago (17e ed.) Bronvermelding

Aviation Crossroads Challenges In A Changing World Proceedings Of The 23rd Air Transport Conference. American Socity of Civil Engineers, 1994.

MLA (8e ed.) Bronvermelding

Aviation Crossroads Challenges In A Changing World Proceedings Of The 23rd Air Transport Conference. American Socity of Civil Engineers, 1994.