Trích dẫn APA

Cushen, C., Hutchison, S., & Harrison, L. (2013). Achieve IELTS 1: English for international education. Intermediate - upper intermediate Brand 4.5 - 6 CEFR B1 - B2. Workbook with Audio CD. Heinle Cengage Learning.

Chicago Style (17th ed.) Citation

Cushen, Caroline, Susan Hutchison, and Louis Harrison. Achieve IELTS 1: English for International Education. Intermediate - Upper Intermediate Brand 4.5 - 6 CEFR B1 - B2. Workbook with Audio CD. Andover, Hampshire: Heinle Cengage Learning, 2013.

Trích dẫn MLA

Cushen, Caroline, et al. Achieve IELTS 1: English for International Education. Intermediate - Upper Intermediate Brand 4.5 - 6 CEFR B1 - B2. Workbook with Audio CD. Heinle Cengage Learning, 2013.