APA Style
Putra, I, B, W. (2017).
Hukum Kontrak Internasional: The Law of International Contract .
Bandung:
Refika Aditama.
MLA Style
Putra, Ida, Bagus, Wyasa.
"Hukum Kontrak Internasional: The Law of International Contract".
Bandung:
Refika Aditama,
2017.
Textbook.