APA (7th ed.) Citation

Kingsbury, R., O'Dell, F., & Wellman, G. (1991). Longman practice exams for the CAE. Longman.

Chicago Style (17th ed.) Citation

Kingsbury, Roy, Felicity O'Dell, and Guy Wellman. Longman Practice Exams for the CAE. Essex, England: Longman, 1991.

MLA (9th ed.) Citation

Kingsbury, Roy, et al. Longman Practice Exams for the CAE. Longman, 1991.