Penguin Random House & Princeton Review (Firm). (2022). ACT English prep. Penguin Random House.
Čikaški stil citiranja (17. izdanje)Penguin Random House i Princeton Review (Firm). ACT English Prep. New York: Penguin Random House, 2022.
MLA način citiranja (9. izdanje)Penguin Random House i Princeton Review (Firm). ACT English Prep. Penguin Random House, 2022.
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