That's a big chunk of many copyright issues. It's a common misconception that if you acknowledge a source, it's OK to use it, no matter what. Citing a source does not imply you have permission to use it (Simpson, 2005). That's the rule for today!
My main source for this blog will be our text, so I'm going to acknowledge it right now. (After reading a bit, I understand I DO have permission to use it this way). :)
Simpson, Carol. (2005). Copyright for schools: A practical guide, Fourth edition.
Worthington, OH: Linworth Books.