look up books by Dr. Lester Grinspoon, thats the only one I remember but he has a lot of great info, hes super smart and a huge weed advocate, he could probably feed you enough info for 6 pages
Use books not the internet. There is always some bias to the information that you find. Look for studies that you can get the actually study notes or documents from. Also as someone stated grinspoon has a good book.