United States. Department of the Army. ARMY AIRFIELD-HELIPORT DESIGN: GENERAL PROVISION AND CRITERIA.
芝加哥风格引文United States. Department of the Army. ARMY AIRFIELD-HELIPORT DESIGN: GENERAL PROVISION AND CRITERIA. U.S.G.P., 1965. (T.M. 5-823-1).
MLA引文United States. Department of the Army. ARMY AIRFIELD-HELIPORT DESIGN: GENERAL PROVISION AND CRITERIA.
警告：这些引文格式不一定是100％准确.