Citazione Stile APA (7a Edizione)

Travers, P., Harrison, L., & Chong, C. S. (2015). Collins English for exams: Practice tests for IELTS. Collins.

Citazione stile Chigago Style (17a edizione)

Travers, Peter, L. Harrison, e Chia Suan Chong. Collins English for Exams: Practice Tests for IELTS. London: Collins, 2015.

Citatione MLA (9a ed.)

Travers, Peter, et al. Collins English for Exams: Practice Tests for IELTS. Collins, 2015.