Organization, 4. I. C. A. (1981). Manual on the ICAO bird Strike Information System (IBIS). Montreal : International Civil Aviation Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrganization, 4490 International Civil Aviation. Manual on the ICAO Bird Strike Information System (IBIS). Montreal : International Civil Aviation Organization, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOrganization, 4490 International Civil Aviation. Manual on the ICAO Bird Strike Information System (IBIS). Montreal : International Civil Aviation Organization, 1981.
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