Gaya APA
Indonesia in the 1990s. (1991).
London:
Euromoney.
Gaya Chicago
Indonesia in the 1990s.
.
London:
Euromoney,
1991.
Buku.
Gaya MLA
Indonesia in the 1990s.
.
London:
Euromoney,
1991.
Buku.
Gaya Turabian
Indonesia in the 1990s.
London:
Euromoney,
1991.
Buku.