Citazione Stile APA (7a Edizione)

(2019). Cracking the GRE (2020 edition.). Penguin random House.

Citazione stile Chigago Style (17a edizione)

Cracking the GRE. 2020 edition. New York: Penguin random House, 2019.

Citatione MLA (9a ed.)

Cracking the GRE. 2020 edition. Penguin random House, 2019.