Wassenbergh, H. A. (1970). Aspects of air law and civil air policy in the seventies. Nijhoff.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWassenbergh, H. A. Aspects of Air Law and Civil Air Policy in the Seventies. The Hague: Nijhoff, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWassenbergh, H. A. Aspects of Air Law and Civil Air Policy in the Seventies. Nijhoff, 1970.
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