APA (7th ed.) Citation

National Learning Corporation. (2005). Sanitation worker: Test preparation study guide questions & answers. National Learning Corporation.

Chicago Style (17th ed.) Citation

National Learning Corporation. Sanitation Worker: Test Preparation Study Guide Questions & Answers. Syosset, N.Y.: National Learning Corporation, 2005.

MLA (8th ed.) Citation

National Learning Corporation. Sanitation Worker: Test Preparation Study Guide Questions & Answers. National Learning Corporation, 2005.

Warning: These citations may not always be 100% accurate.