Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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