APA (7th ed.) Citation

Hasan, R., & Fries, P. H. (1995). On subject and theme: A discourse functional perspective. John Benjamins.

Chicago Style (17th ed.) Citation

Hasan, Ruqaiya, and Peter Howard Fries. On Subject and Theme: A Discourse Functional Perspective. Amsterdam [etc.]: John Benjamins, 1995.

MLA (9th ed.) Citation

Hasan, Ruqaiya, and Peter Howard Fries. On Subject and Theme: A Discourse Functional Perspective. John Benjamins, 1995.