MLA Format has updated to the 8th edition!
The following links are the best citation builders that have been updated to the 8th edition:
NC State Citation Builder: https://www.lib.ncsu.edu/citationbuilder/
EasyBib: http://www.easybib.com/
Please refer to Purdue OWL for MLA and APA help!
https://owl.english.purdue.edu/owl/section/2/