TL;DR: There are enough references in your answer. The OP might not have checked properly. They are unclear where you took it from. You just need to be clearer while adding them. A reference can be anything which will support the claims what are added in the answer. There should be a clear indication of the reference i.e., on what basis you are writing something. It need not to be a quote or a link to a website. They are encouraged.
For valid references on our site, see What kind of references are valid in answers? Are modern works allowed?
First of all, the references in your answer looks fine. References are enough for that answer.
Avoid "this chapter here says" in questions and answer.
Adding chapter names will help even if the links are dead.
If the link is dead in some cases, it will be very difficult to know which site and chapter the content is taken. When the answer solely depends on the links and the link is dead, it might affect the existence of answer and it may be deleted. So, adding chapter name will be helpful.
Quote only when needed
I think the help center article you added already says enough how the citations should be added.
- Provide a link to the original page or answer
- Quote only the relevant portion
- Provide the name of the original author
So, give proper attribution to the author from where you have taken the content. While adding or quoting information from external sources, proper way of attribution should be followed. See blog post by Jeff Atwood which is about attribution.
Citations are mandatory not quotes
Do not copy the complete text of external sources; instead, use their words and ideas to support your own.
Links and quotes are not always mandatory. There should be clear indication from which source the content is taken. If there is a link add it.
A reference or a citation is something which should be added to support what you say in the answer. We need your answer and not someone else's answer. The quoted material itself shouldn't be the complete answer. We have to remember that quoting is different from citing. Citations are mandatory on our site and not quotes. Also see
To improve your answer, adding the chapter numbers is needed. If you know the shloka numbers too, that is a bonus but they are not required. It will be helpful to the readers without looking into the link added.