APA Style

Murphy, S, J., Nash, S. (2000). MathStart, Level 1 #13: Monster Musical Chairs (Subtracting One) (Cetakan ke-1). New York: HarperCollins Publishers.

MLA Style

Murphy, Stuart, J.., Nash, Scott. "MathStart, Level 1 #13: Monster Musical Chairs (Subtracting One)". Cetakan ke-1 New York: HarperCollins Publishers, 2000. Text.