Gaya APA
GMAT Official Guide 2019. (2018).
singapore:
John Wiley & Sons Australia.
Gaya Chicago
GMAT Official Guide 2019.
.
singapore:
John Wiley & Sons Australia,
2018.
Text.
Gaya MLA
GMAT Official Guide 2019.
.
singapore:
John Wiley & Sons Australia,
2018.
Text.
Gaya Turabian
GMAT Official Guide 2019.
singapore:
John Wiley & Sons Australia,
2018.
Print.