Abbs, B., & Freebairn, I. (1979). Building strategies: An integrated course for learners of english. Longman.
Citazione stile Chigago Style (17a edizione)Abbs, Brian, e Ingrid Freebairn. Building Strategies: An Integrated Course for Learners of English. Londres: Longman, 1979.
Citatione MLA (9a ed.)Abbs, Brian, e Ingrid Freebairn. Building Strategies: An Integrated Course for Learners of English. Longman, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.