APA Style

Murphy, S, J., Nash, S. (1999). MathStart, Level 1 #9: Henry the Fourth (Ordinals) (Cetakan ke-1). New York: HarperCollins Publishers.

MLA Style

Murphy, Stuart, J.., Nash, Scott. "MathStart, Level 1 #9: Henry the Fourth (Ordinals)". Cetakan ke-1 New York: HarperCollins Publishers, 1999. Text.