APA (7th ed.) Citation
Driscoll, L., & Sharley, A. (1988). Trio plus: Students book. Heinemann educational books.
Chicago Style (17th ed.) Citation
Driscoll, Liz, and Alan Sharley. Trio Plus: Students Book. Oxford: Heinemann educational books, 1988.
MLA (9th ed.) Citation
Driscoll, Liz, and Alan Sharley. Trio Plus: Students Book. Heinemann educational books, 1988.
Warning: These citations may not always be 100% accurate.