APA (7th ed.) Citation

National Evaluation Systems, inc. (2004). The official THEA test study guide. National Evaluation Systems.

Chicago Style (17th ed.) Citation

National Evaluation Systems, inc. The Official THEA Test Study Guide. Amherst, MA: National Evaluation Systems, 2004.

MLA (9th ed.) Citation

National Evaluation Systems, inc. The Official THEA Test Study Guide. National Evaluation Systems, 2004.