"Applegate, K. A. " In Something about the Author, Vol. 109. Detroit: The Gale Group, 2000. An essay that includes biographical information about Applegate and information about her writing.

"K. A. Applegate." In Authors and Artists for Young Adults, Vol. 37. Detroit: The Gale Group, 2000. A biographical essay with comments on Applegate's life and work.

Lodge, Sally. "Scholastic's Animorphs Series Has Legs." In Publishers Weekly 244, 45 (November 3, 1997): 36-37.

Review of Search for Senna. In Publishers Weekly 246, 25 (June 21, 1999): 69. The reviewer says, "With her blend of accessible story and mythological cast of characters, Applegate is sure to attract a host of new fans."