I was wrong. This is the correct way for MLA format.
QUOTE
Two or More Authors [5.6.4]
List the names in the order they appear on the title page.
Only the first author's name should be reversed: Last Name, First Name.
Use a comma between the authors' names. Place a period after the last author's name.
Rowe, Richard, and Larry Jeffus. The Essential Welder: Gas Metal Arc Welding Classroom Manual. Albany:
Delmar, 2000.
If there are more than three authors, name only the first and add et al., or give all the names.
Randall, John E., Gerald R. Allen, and Roger C. Steene. Fishes of the Great Barrier Reef and Coral Sea.
Honolulu: U of Hawaii P, 1997.
If the persons named on the title page are editors or compilers, add a comma after the final name, then the abbreviation "eds." or "comps."
Clute, John, and Peter Nicholls, eds. The Encyclopedia of Science Fiction. New York: St. Martin's, 1993.