There are many useful and effective tutorials on the web that can help you to learn the skills required to accurately referencing your sources. Below are a few links to help you get started.
Students at the University of Auckland can access this online course, which describes the rules and expectations relating to academic conduct, plagiarism, acknowledging others' work, use of copyrighted material and consequences of academic misconduct.
Why, when and how to reference
APA referencing guide
MLA 8 - Works Cited: A Quick Guide
Core elements, containers and examples.
Ethical use of information