APA-referens (7:e uppl.)

Abbs, B., & Freebairn, I. Building strategies 2. Students' book. an integrated language course for learners of english.

Chicago-referens (17:e uppl.)

Abbs, Brian, och Ingrid Freebairn. Building Strategies 2. Students' Book. an Integrated Language Course for Learners of English.

MLA-referens (8:e uppl.)

Abbs, Brian, och Ingrid Freebairn. Building Strategies 2. Students' Book. an Integrated Language Course for Learners of English.

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