APA (7th ed.) Citation

Abbs, B., & Freebairn, I. (1991). Blueprint intermediate. Student's book. Longman.

Chicago Style (17th ed.) Citation

Abbs, Brian, and Ingrid Freebairn. Blueprint Intermediate. Student's Book. Harlow: Longman, 1991.

MLA (9th ed.) Citation

Abbs, Brian, and Ingrid Freebairn. Blueprint Intermediate. Student's Book. Longman, 1991.

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