APA (7th ed.) Citation

Hopkins, D., & Cullen, P. (2021). IELTS grammar: For bands 6.5 and above : with audio. Cambridge University Press.

Chicago Style (17th ed.) Citation

Hopkins, Diana, and Pauline Cullen. IELTS Grammar: For Bands 6.5 and Above : With Audio. Cambridge: Cambridge University Press, 2021.

MLA (9th ed.) Citation

Hopkins, Diana, and Pauline Cullen. IELTS Grammar: For Bands 6.5 and Above : With Audio. Cambridge University Press, 2021.