The tools are freely available, but proper citation should be used when referenced on the Web or in print.

Copying of material by another author without proper citation or without required permissions is plagiarism.

Typically, a proper legal citation will inform the reader about a source's authority, how strongly it supports the writer's proposition, its age, and other, relevant information.

Information is available for download at no cost to the user with proper citation.

Kevin's second article contained the proper citations.

Please extend the courtesy of proper citation when you quote the File, ideally with a version number, as it will change and grow over time.

All Correlates of War databases are available free for public and academic use with proper citation.

A Voice of America radio broadcast transcript supports this position, but proper supporting citations are not yet found.

Feel free to alter the text but please maintain the proper citations to that work.

It also operates a comprehensive metadata schema to ensure proper citation of registered social and economic data.