Style de citation APA (7e éd.)

Abbs, B., & Freebairn, I. (1994). Blueprint one.: Students` book (1a. ed. 6a. imp.). Longman.

Style de citation Chicago (17e éd.)

Abbs, Brian, et Ingrid Freebairn. Blueprint One.: Students` Book. 1a. ed. 6a. imp. Madrid: Longman, 1994.

Style de citation MLA (9e éd.)

Abbs, Brian, et Ingrid Freebairn. Blueprint One.: Students` Book. 1a. ed. 6a. imp. Longman, 1994.