Citazione Stile APA (7a Edizione)

Abbs, B., & Freebairn, I. (1985). Building Strategies. Students' Book. Strategies 2. Longman.

Citazione stile Chigago Style (17a edizione)

Abbs, Brian, e Ingrid Freebairn. Building Strategies. Students' Book. Strategies 2. Essex: Longman, 1985.

Citatione MLA (9a ed.)

Abbs, Brian, e Ingrid Freebairn. Building Strategies. Students' Book. Strategies 2. Longman, 1985.