APA (7th ed.) Citation

Martin & Tang. (1989). Karen's worst day. Scholastic Inc.

Chicago Style (17th ed.) Citation

Martin and Tang. Karen's Worst Day. New York: Scholastic Inc, 1989.

MLA (8th ed.) Citation

Martin and Tang. Karen's Worst Day. Scholastic Inc, 1989.

Warning: These citations may not always be 100% accurate.