APA-viite (7. p.)

Abbs, B., & Freebairn, I. (1997). Blueprint one (20a. ed.). Longman.

Chicago-viite (17. p.)

Abbs, Brian, ja Ingrid Freebairn. Blueprint One. 20a. ed. Essex: Longman, 1997.

MLA-viite (9. p.)

Abbs, Brian, ja Ingrid Freebairn. Blueprint One. 20a. ed. Longman, 1997.