Generally it depends what type of information you are looking for. Searching best sources online is a tedious task given the amount of sources available. You need have an idea of which sources provide what type of information. www.freeresearchdata.com is one place which I found useful in solving this specific problem.
sulit.com.ph
it is research about your topic ___________ Sources provide information and evidence.
Intensive research is research that is in-depth. Instead of researching a few sources, researcher may research sources years in the past.
make educated claims
A variety of approaches to this research are used, including use of secondary data sources, observation, interviews with experts, and case histories
Plagiarism.
observation analyzation experementation
you dont now what your talkeing about
you dont now what your talkeing about
Failure to use sources means that you write the piece off the top of your head. (It implies that you did not do much research and didn't understand the subject matter).
Look through your sources for information you can use
Look through your sources for information you can use.