APA (7th ed.) Citation

ACT, Inc. (2018). The official ACT prep guide: The only official prep guide from the makers of the ACT. John Wiley & Sons, Inc..

Chicago Style (17th ed.) Citation

ACT, Inc. The Official ACT Prep Guide: The Only Official Prep Guide from the Makers of the ACT. Hoboken, New Jersey: John Wiley & Sons, Inc., 2018.

MLA (9th ed.) Citation

ACT, Inc. The Official ACT Prep Guide: The Only Official Prep Guide from the Makers of the ACT. John Wiley & Sons, Inc., 2018.