One of the issues many authors have is how to cite sources properly. Proper citing of sources prevents plagiarism, and establishes credibility for the author and the paper. In academic writing, papers are expected to cite sources as research builds on other research. In the non-academic world, unfortunately, plagiarism is more common.
Learning how to cite sources is easy and will set the authors work apart from the crowd of non-authoritative, plagiarized, and generally non-unique articles which are proliferating with the advent of private label rights authors.
Many ways to cite sources exist, and most publications specify which format is required. When no stated preferences are available, or the paper is for internet publication, any of the standard formats is acceptable, and using the format the author is most comfortable with is the best choice.