Nope, no sources allowed. If it has a brand name or the name of a UGL you could say that but you can't say where to get it. It doesn't really matter anyways. Most oils are good heated up to 350° but that's the limit for mct, you start getting higher than that the oils can actually burn and become rancid/toxic, produce free radicals.
That's why it's bad to cook with olive oil and other certain oils at high heats, because they become toxic at a certain point and once that happens there's nothing you can do about it. Mct oil has a smoke point of 350, it actually does start to damage over 320°
You're not going to notice anything's wrong by pinning it, but as your cycle goes on if you start notice lots of inflammation or swelling particularly in your joints and stuff like that. That definitely could be a sign that the oil is no good and you should chuck it