APA-viite (7. p.)
ETS. (2025). The Official Guide to the GRE: General test (4th Ed.). McGraw hill Education.
Chicago-viite (17. p.)
ETS. The Official Guide to the GRE: General Test. 4th Ed. Chennai: McGraw hill Education, 2025.
MLA-viite (9. p.)
ETS. The Official Guide to the GRE: General Test. 4th Ed. McGraw hill Education, 2025.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.