Definitions:
Quoting*: "(a) to speak or write (a passage) from another usually with credit acknowledgment. (b) to repeat a passage from especially in substantiation or illustration."
Paraphrasing*: Paraphrase is the “restatement of a text, passage, or work giving the meaning in another form.”
Summarize*: It’s the process of summarizing a text or paragraph to its the main points succinctly.
Synthesize*: “1. (a) the composition or combination of parts or elements so as to form a whole."
*Definitions from Merriam Webster Dictionary Online, http://www.m-w.com <Accessed September 1st, 2011>
Useful sites with tips on how to write a Literature Review: