Penguin Random House & Princeton Review (Firm). (2022). ACT English prep. Penguin Random House.
芝加哥风格引文Penguin Random House 与 Princeton Review (Firm). ACT English Prep. New York: Penguin Random House, 2022.
MLA引文Penguin Random House 与 Princeton Review (Firm). ACT English Prep. Penguin Random House, 2022.
警告：这些引文格式不一定是100％准确.