Gaya APA
Challoner, Jack. ().
Energi .
Jakarta:
Balai Pustaka.
Gaya Chicago
Challoner, Jack.
Energi.
Jakarta:
Balai Pustaka,
.
Text.
Gaya MLA
Challoner, Jack.
Energi.
Jakarta:
Balai Pustaka,
.
Text.
Gaya Turabian
Challoner, Jack.
Energi.
Jakarta:
Balai Pustaka,
.
Print.