I have to write a research paper on this topic, and I am having trouble finding legitimate sources to pull information. I have looked on google, Bing, and yahoo, but every time I find a source my professor tells me that it‘s not credible, because the people who write them aren‘t doctors, scientist or professional researchers. So, I was wondering if anyone knew of some websites or a book I could read to begin my research.
It might help if you tell us what sites your professor nixed. There is certainly tons of info on line about research on preservatives and additives. But I'm not going to do your research without at least know what sort of sources are acceptable. But then, if you knew that, you wouldn't be looking for help?
