Παραπομπή APA

(1956). Procedures for air navigation services rules of the air and air traffic services (6th ed.). Montreal: [s.n.].

Παραπομπή Chicago Style

Procedures for Air Navigation Services Rules of the Air and Air Traffic Services. 6th ed. Montreal: [s.n.], 1956.

Παραπομπή MLA

Procedures for Air Navigation Services Rules of the Air and Air Traffic Services. 6th ed. Montreal: [s.n.], 1956.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.