Ldemasi

November 2009

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Citation of sources

Hello Ldemasi. Thank you for taking an interest in our article Lift-induced drag. I notice you have added a lot of new material but you haven't identified the source of your information.

On Wikipedia, all substantial information (information that has been challenged, or is likely to be challenged) must be supported by in-line citations to allow independent verification. See WP:Verifiability. Information that is not supported by sufficient in-line citations to allow independent verification is regarded as no better than original research and can be deleted. (See No original research.)

Please add in-line citations to support your new text. For guidance on how to add in-line citations see WP:Citing sources and WP:REFBEGIN. Dolphin (t) 05:23, 25 January 2014 (UTC)