noun
control surface

MLA Style
"control surface." YourDictionary, n.d. Web. 31 January 2019. <https://www.yourdictionary.com/control-surface>.
APA Style
control surface. (n.d.). Retrieved January 31st, 2019, from https://www.yourdictionary.com/control-surface
(plural control surfaces)
MLA Style
"control surface." YourDictionary, n.d. Web. 31 January 2019. <https://www.yourdictionary.com/control-surface>.
APA Style
control surface. (n.d.). Retrieved January 31st, 2019, from https://www.yourdictionary.com/control-surface