The Bates Bulletin 2016 is clearly a derivative source. We generally try to use sources as close to the actual event as possible. Look up the references they use and quote those, with links to the source. If they don't quote references then it shouldn't be used at all.
Also, born around 1670 is a guess, not a source. Sources are specific, stating date, place and event. This becomes far more important for older records, because people build their trees upon those roots.
Examples of an acceptable source for birth: a church or government record, and if the link contains a picture of the original document it's even better. Indexes are secondary sources. Books are secondary sources. A family bible with entries made at the time of birth is also an excellent source, but a photo of the page would be required.