APA Style

Rowling, J, K., GrandPré, M. (2006). Harry Potter and the Half-Blood Prince (Harry Potter #6) . New York, USA: Arthur A. Levine Books (Scholastic, Inc.).

MLA Style

Rowling, J., K.., GrandPré, Mary. "Harry Potter and the Half-Blood Prince (Harry Potter #6)". New York, USA: Arthur A. Levine Books (Scholastic, Inc.), 2006. Printed Book.