Gaya APA
Mengenal alam semesta for beginners. (2004).
Bandung:
Mizan.
Gaya Chicago
Mengenal alam semesta for beginners.
.
Bandung:
Mizan,
2004.
Text.
Gaya MLA
Mengenal alam semesta for beginners.
.
Bandung:
Mizan,
2004.
Text.
Gaya Turabian
Mengenal alam semesta for beginners.
Bandung:
Mizan,
2004.
Print.