Gaya APA
Ikranegara, Yudhistira. ().
Asal mula Danau Toba .
Surabaya:
Cahaya Agency.
Gaya Chicago
Ikranegara, Yudhistira.
Asal mula Danau Toba.
Surabaya:
Cahaya Agency,
.
Text.
Gaya MLA
Ikranegara, Yudhistira.
Asal mula Danau Toba.
Surabaya:
Cahaya Agency,
.
Text.
Gaya Turabian
Ikranegara, Yudhistira.
Asal mula Danau Toba.
Surabaya:
Cahaya Agency,
.
Print.