Gaya APA
Hukum perikatan (law of obligations). (2012).
:
.
Gaya Chicago
Hukum perikatan (law of obligations).
.
:
,
2012.
Textbook.
Gaya MLA
Hukum perikatan (law of obligations).
.
:
,
2012.
Textbook.
Gaya Turabian
Hukum perikatan (law of obligations).
:
,
2012.
Textbook.