Genuine or Copied???

Reguarding all of the research that we as psychology students will do in the future, it is crucial to have the genuine books as our guide to better research. Other than that, it is for the benefit of all students who have it. Personally I would rather spend much money on books for the sake of my own stance in this major. Believing that by buying the real ones and not copies of it, will prevent myself from doing piracy. I know that for a fact that some of my friends are keeping copies but I have to hold my own wise decision because the books that we buy will help us forever throughout the college years.