APA (7th ed.) Citation
Walker, E., & Elsworth, S. (1990). Blueprint Intermediate: Workbook (1. ed.). Longman.
Chicago Style (17th ed.) Citation
Walker, Elaine, and Steve Elsworth. Blueprint Intermediate: Workbook. 1. ed. Harlow: Longman, 1990.
MLA (9th ed.) Citation
Walker, Elaine, and Steve Elsworth. Blueprint Intermediate: Workbook. 1. ed. Longman, 1990.
Warning: These citations may not always be 100% accurate.