APA (7th ed.) Zitazioa

(1984). School trip safety program guidelines: Recommended practice. Institute of Transportation Engineers.

Chicago Style (17th ed.) Zitazioa

School Trip Safety Program Guidelines: Recommended Practice. Washington, D.C: Institute of Transportation Engineers, 1984.

MLA (9th ed.) Zitazioa

School Trip Safety Program Guidelines: Recommended Practice. Institute of Transportation Engineers, 1984.