Gaya APA
The official guide to the gre general test. (2017).
United States of America:
McGraw-Hill Education.
Gaya Chicago
The official guide to the gre general test.
.
United States of America:
McGraw-Hill Education,
2017.
Text.
Gaya MLA
The official guide to the gre general test.
.
United States of America:
McGraw-Hill Education,
2017.
Text.
Gaya Turabian
The official guide to the gre general test.
United States of America:
McGraw-Hill Education,
2017.
Print.