Gaya APA
SINAGA, O., ROBERTUA, V. (2017).
Indonesia in the south China sea dispute : .
Surabaya:
FISIP Universitas Airlangga.
Gaya MLA
SINAGA, Obsatar., ROBERTUA, Verdinand.
"Indonesia in the south China sea dispute :".
Surabaya:
FISIP Universitas Airlangga,
2017.
Artikel.