Research Papers / 8-10 page research paper using MLA citing?? [2]

I am confused.. I am writing a research paper on a health condition, This whole MlA citing can be confusing to me. My last research paper I got a 66 because I used too much information from the sources. If the information I am getting from one page is in differant paragraphs, how would I cite that correctly?

**would I use (author last name,pg#,par#)
Any help on this would be greatly appreciated!