The guidelines on referencing are inconsistent with the example.
When you find a useful resource that can help answer a question (from another site or in an answer on Money Stack Exchange) make sure you do all of the following:
- Provide a link to the original page or answer
- Quote only the relevant portion
- Provide the name of the original author
but the example adds one more condition:
[other sources, quotes, explanations, etc. necessary to complete the answer]