It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Citing Primary Sources: Chicago Style- Library of Congress always has great resources for students and this one tops the list of citation help. It has different examples and also gives a brief explanation of how to cite any material you may find on the internet.
Purdue OWL Writing Guide- There is a reason why this is constantly referenced all the time by librarians and professors alike and it is because it is a very well-laid out guide on how to handle your citations.