@book{393051,
	title = {Rules of the air},
	publisher = {International Civil Aviation Organization. ICAO},
	year = {[1990]},
	series = {International Standards},
	address = {[S.l.]},
	edition = {9.ª ed.},
	note = {This edition incorporates all amendments adopted by the Council prior to 13 March 1990 and supersedes, on 14 November 1991, all previous editions of annex 2.}
}