"sigmas." YourDictionary, n.d. Web. 18 January 2019. <https://www.yourdictionary.com/sigmas>.
sigmas. (n.d.). Retrieved January 18th, 2019, from https://www.yourdictionary.com/sigmas
Yes, I'd like to receive Word of the Day emails from YourDictionary.com
By continuing, you agree to our
Please set a username for yourself.
People will see it as Author Name with your public flash cards.