APA (7 वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Bushnell, D. M., & Hefner, J. N. (1990). Viscous drag reduction in boundary layers. American Institute of Aeronautics and Astronautics, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, Dennis M. Bushnell, और Jerry N. Hefner. Viscous Drag Reduction in Boundary Layers. Washington, D.C.: American Institute of Aeronautics and Astronautics, Inc., 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, et al. Viscous Drag Reduction in Boundary Layers. American Institute of Aeronautics and Astronautics, Inc., 1990.
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