APA (7th ed.) Citation

O'connor, F. H. (1990). Express yourself: In written english. National textbook com.

Chicago Style (17th ed.) Citation

O'connor, Frederick H. Express Yourself: In Written English. USA: National textbook com, 1990.

MLA (9th ed.) Citation

O'connor, Frederick H. Express Yourself: In Written English. National textbook com, 1990.