"In this third circle, write four quotations from The Lightning Thief that relate to the center sketch. Document this quotation properly (The Lightning Thief, Riordan, pg. 84).

Does the quotations I put have to be in complete sentence? For example my sketch was riptide from the book so does this quotation have to be in a complete sentence or just the part I want?

I held a shimmering bronze sword with a double-edged blade (The Lightning Thief Riordan page 153 or With a double edged blade The Lightning Thief page 153

I think it is better to use the entire sentence.