Kelly, J. R. (1979). Description of the VTOL approach and landing technology (VALT) Ch-47 research system. Washington: National Aeronautics and Space Administration, Scientific and Technical Information Branch.
Chicago Style CitationKelly, James R. Description of the VTOL Approach and Landing Technology (VALT) Ch-47 Research System. Washington: National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1979.
MLA CitationKelly, James R. Description of the VTOL Approach and Landing Technology (VALT) Ch-47 Research System. Washington: National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1979.
Warning: These citations may not always be 100% accurate.