APA (7th ed.) Zitazioa
ETS. (2025). The Official Guide to the GRE: General test (4th Ed.). McGraw hill Education.
Chicago Style (17th ed.) Zitazioa
ETS. The Official Guide to the GRE: General Test. 4th Ed. Chennai: McGraw hill Education, 2025.
MLA (9th ed.) Zitazioa
ETS. The Official Guide to the GRE: General Test. 4th Ed. McGraw hill Education, 2025.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.