APA-Zitierstil (7. Ausg.)

Travis, P. W., & Harrison, L. (2015). Collins practice tests for IELTS 2: [4 academic + 2 general training papers with answers] (1. ed.). Collins.

Chicago-Zitierstil (17. Ausg.)

Travis, Peter W., und Louis Harrison. Collins Practice Tests for IELTS 2: [4 Academic + 2 General Training Papers with Answers]. 1. ed. London: Collins, 2015.

MLA-Zitierstil (9. Ausg.)

Travis, Peter W., und Louis Harrison. Collins Practice Tests for IELTS 2: [4 Academic + 2 General Training Papers with Answers]. 1. ed. Collins, 2015.