Cita APA (7th ed.)

Abbs, B. (1996). Blueprint one: Students' Book (18a. ed.). Longman.

Cita Chicago (17th ed.)

Abbs, Brian. Blueprint One: Students' Book. 18a. ed. Essex: Longman, 1996.

Cita MLA (9th ed.)

Abbs, Brian. Blueprint One: Students' Book. 18a. ed. Longman, 1996.