United States. Department of the Army. ARMY AIRFIELD-HELIPORT DESIGN: GENERAL PROVISION AND CRITERIA.
Chicago Style (17th ed.) CitationUnited States. Department of the Army. ARMY AIRFIELD-HELIPORT DESIGN: GENERAL PROVISION AND CRITERIA. U.S.G.P., 1965. (T.M. 5-823-1).
ציטוט MLAUnited States. Department of the Army. ARMY AIRFIELD-HELIPORT DESIGN: GENERAL PROVISION AND CRITERIA.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.