Crawford, D. R. (1981). A practical guide to airplane performance and design. Crawford Aviation.
Chicago Style (17. basım) AtıfCrawford, Donald R. A Practical Guide to Airplane Performance and Design. Torrance: Crawford Aviation, 1981.
MLA (9th ed.) AtıfCrawford, Donald R. A Practical Guide to Airplane Performance and Design. Crawford Aviation, 1981.
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