APA (7th ed.) Citation

Abbs, B., & Freebairn, I. (1989). Blueprint intermediate: Student's book.

Chicago Style (17th ed.) Citation

Abbs, Brian, and Ingrid Freebairn. Blueprint Intermediate: Student's Book. Harlow, 1989.

MLA (9th ed.) Citation

Abbs, Brian, and Ingrid Freebairn. Blueprint Intermediate: Student's Book. 1989.