If your source has two authors, separate their last names with the word “and.” The authors’ names should be listed in the order they appear in the published work.
Example:
According to most experts, “the best way to increase a child’s literacy” is to read to them every night (Wolf and Munemo 220–240).
The first time the authors are mentioned in the text, the full names of both authors should be used.
Example:
James Wolf and Alice Munemo note that children whose parents read to them every night receive higher scores on literacy tests (220–240).