Say I want to take some contents from this page: https://www.grammarbook.com/punctuation/quotes.asp
I do like this:
Here is the code:
[quote author=https://www.grammarbook.com/punctuation/quotes.asp]The rules set forth in this section are customary in the United States. Great Britain and other countries in the Commonwealth of Nations are governed by quite different conventions. Nowhere is this more apparent than in Rule 4 in this section, a rule that has the advantage of being far simpler than Britain's and the disadvantage of being far less logical[/quote]
The code structure:
[quote author=LINKOFTHEPAGE]CONTENTS[/quote]
Hope it helps