APA (7th ed.) Citation

Harrison, L., Cushen, C., & Hutchison, S. (2008). Achieve IELTS: English for international education ; [intermediate, upper intermediate] (1. ed., updated and repr.). Langenscheidt.

Chicago Style (17th ed.) Citation

Harrison, Louis, Caroline Cushen, and Susan Hutchison. Achieve IELTS: English for International Education ; [intermediate, Upper Intermediate]. 1. ed., updated and repr. München: Langenscheidt, 2008.

MLA (9th ed.) Citation

Harrison, Louis, et al. Achieve IELTS: English for International Education ; [intermediate, Upper Intermediate]. 1. ed., updated and repr. Langenscheidt, 2008.