Help with mla works cited?

When you do a works cited in mla format, do the sources have to be numbered? Or not, because I'm in enriched english and my teacher is really strict with the mla format. Thanks a bunch, this isn't cheating I just need to know! Badly!

no they don't and also type in citationmachine on google on there you type in the info and they format it for you then all you have to do is copy and paste!

thanks!

when I have to use MLA I got to www.noodletools.com... you just pick the information and it will make the cites for you. :]