APA (7th ed.) Citation

Hasan, R., Cloran, C., & Butt, D. (1996). Functional descriptions: Theory in practice. Benjamins.

Chicago Style (17th ed.) Citation

Hasan, Ruqaiya, C. Cloran, and David Butt. Functional Descriptions: Theory in Practice. Amsterdam [etc.]: Benjamins, 1996.

MLA (9th ed.) Citation

Hasan, Ruqaiya, et al. Functional Descriptions: Theory in Practice. Benjamins, 1996.