Hello community friends, I want to ask friends here, I'm confused, I hope to help me give instructions, so I'm not wrong in writing. And other friends are also not wrong in writing like me.

I quoted an explanation from a website, but I entered the source, am I wrong?

I don't understand, I didn't copy someone else's, but I have added someone else's source.

If I'm wrong in entering someone else's source, how should I make a posting quoting someone else's? I beg for help from a friend?