As a Trojan, you are expected to adhere all University Policies. The University has a plethora of information to assist you in maintaining Trojan values.
Student Judicial Affairs & Community Standards
Here are several resources to help you. The following provide examples of plagiarism to help you avoid doing it by accident:
Trojan Integrity: A Guide to Understanding and Avoiding Academic Dishonesty
Trojan Integrity: A Guide to Avoiding Plagiarism
The USC Libraries LibGuide on Academic Integrity
Check the plagiarism quiz to make sure you are not inadvertently plagiarising.