Gaya APA
Directory 2016-2017. (2017).
Jakarta:
The Indonesian Iron & Steel Industry Association.
Gaya Chicago
Directory 2016-2017.
.
Jakarta:
The Indonesian Iron & Steel Industry Association,
2017.
Text.
Gaya MLA
Directory 2016-2017.
.
Jakarta:
The Indonesian Iron & Steel Industry Association,
2017.
Text.
Gaya Turabian
Directory 2016-2017.
Jakarta:
The Indonesian Iron & Steel Industry Association,
2017.
Print.