APA (7th ed.) Citation

O'Brien, M. J. Harry Potter verzus Frodo Baggins.

Chicago Style (17th ed.) Citation

O'Brien, Michael J. Harry Potter Verzus Frodo Baggins.

MLA (9th ed.) Citation

O'Brien, Michael J. Harry Potter Verzus Frodo Baggins.

Warning: These citations may not always be 100% accurate.