Cita APA (7th ed.)

Hopkins, D., & Nettle, M. (2003). Passport to IELTS: New revised syllabus (Rev. ed.). Phoenix ELT.

Cita Chicago (17th ed.)

Hopkins, Diana, i Mark Nettle. Passport to IELTS: New Revised Syllabus. Rev. ed. London: Phoenix ELT, 2003.

Cita MLA (9th ed.)

Hopkins, Diana, i Mark Nettle. Passport to IELTS: New Revised Syllabus. Rev. ed. Phoenix ELT, 2003.