APA Style
Research Directory. (2000).
Surabaya:
Petra Christian University.
Chicago Style
Research Directory.
.
Surabaya:
Petra Christian University,
2000.
Text.
MLA Style
Research Directory.
.
Surabaya:
Petra Christian University,
2000.
Text.
Turabian Style
Research Directory.
Surabaya:
Petra Christian University,
2000.
Print.