MLA Style Guide: How to cite...

When you are gathering book sources, be sure to make note of the following bibliographic items: the author name(s), other contributors such as translators or editors, the book’s title, editions of the book, the publication date, the publisher, and the pagination.

Great Q&A section on the MLA Style Center

Periodicals include magazines, newspapers, and scholarly journals.

Works cited entries for periodical sources include three main elements—the author of the article, the title of the article, and information about the magazine, newspaper, or journal. MLA uses the generic term “container” to refer to any print or digital venue (a website or print journal, for example) in which an essay or article may be included.

"In a report on data collected from a survey you designed and distributed, clarify the data source in the body of the report instead of creating a works-cited-list entry for the survey. "

Electronic resources (web publications) including:
Best Practices for Managing Online Sources
Important Note on the Use of URLs in MLA
Abbreviations Commonly Used with Electronic Sources
Basic Style for Citations of Electronic Sources (Including Online Databases)
Citing an Entire Web Site
A Page on a Web Site
An E-Book
An Image (Including a Painting, Sculpture, or Photograph)
An Article in a Web Magazine
An Article in an Online Scholarly Journal
An Article from an Online Database (or Other Electronic Subscription Service)
E-mail (including E-mail Interviews)
A Listserv, Discussion Group, or Blog Posting
A Tweet
A YouTube Video
A Comment on a Website or Article

Other common sources:
An interview
Speeches, Lectures, or Other Oral Presentations (including Conference Presentations)
Panel Discussions and Question-and-Answer Sessions
Published Conference Proceedings
A Painting, Sculpture, or Photograph
A Song or Album
Films or Movies
Television Shows
PodcastsSpoken-Word Albums such as Comedy Albums
Digital Files (PDFs, MP3s, JPEGs)