Cita APA (7th ed.)

Jakeman, V., & McDowell, C. (2001). IELTS practice tests plus 1. Longman.

Cita Chicago (17th ed.)

Jakeman, Vanessa, i Clare McDowell. IELTS Practice Tests Plus 1. Harlow, England: Longman, 2001.

Cita MLA (9th ed.)

Jakeman, Vanessa, i Clare McDowell. IELTS Practice Tests Plus 1. Longman, 2001.