If an assignment baffles you, discuss it with your instructor. And if you are directed to use printed sources, consult your instructor about how to proceed. There is an art to taking notes for research; careless note taking can lead to plagiarism.
There are many ways to help prevent plagiarism and other forms of academic dishonesty:
Who owns this text? : plagiarism, authorship, and disciplinary cultures
Academic Writing and Plagiarism
by
Diane Pecorari
