sort by best latest
It's not necessary, unless the writer is quoting a person or book.
However, if the writer is treating the Hub as a more scholarly writing, such as an essay, then it is advisable to list the references in the footer.
You can help the HubPages community highlight top quality content by ranking this answer up or down.
Copyright © 2016 HubPages Inc. and respective owners.
Other product and company names shown may be trademarks of their respective owners.
HubPages® is a registered Service Mark of HubPages, Inc.
HubPages and Hubbers (authors) may earn revenue on this page based on affiliate relationships and advertisements with partners including Amazon, Google, and others.