This is an explanation of the style that may answer many of your questions.
http://www.vanguard.edu/faculty/ddegelman/index.aspx?doc_id=796
Your paper does not have to be exact, but should be as close as your topic allows. Check spelling and grammar and make sure you have double checked your resources. You may do a search on Google for APA Style Format if you need more help with APA Style Citations.