Gaya APA
Ir. Herdy N. Hutabarat, MA. (2014).
The Power of Enthusiasm .
Yogyakarta:
Andi Offset.
Gaya Chicago
Ir. Herdy N. Hutabarat, MA.
The Power of Enthusiasm.
Yogyakarta:
Andi Offset,
2014.
Text.
Gaya MLA
Ir. Herdy N. Hutabarat, MA.
The Power of Enthusiasm.
Yogyakarta:
Andi Offset,
2014.
Text.
Gaya Turabian
Ir. Herdy N. Hutabarat, MA.
The Power of Enthusiasm.
Yogyakarta:
Andi Offset,
2014.
Print.