Gaya APA
Siagian, Ronny. (2013).
Go to the higher level .
Jakarta:
Elex Media Komputindo.
Gaya Chicago
Siagian, Ronny.
Go to the higher level.
Jakarta:
Elex Media Komputindo,
2013.
Text.
Gaya MLA
Siagian, Ronny.
Go to the higher level.
Jakarta:
Elex Media Komputindo,
2013.
Text.
Gaya Turabian
Siagian, Ronny.
Go to the higher level.
Jakarta:
Elex Media Komputindo,
2013.
Print.