APA Style
Siahaan, Edward Tigor. (1999).
Tapanuli Utara : new life in hills & valleys .
Jakarta:
Times Communication.
Chicago Style
Siahaan, Edward Tigor.
Tapanuli Utara : new life in hills & valleys.
Jakarta:
Times Communication,
1999.
Text.
MLA Style
Siahaan, Edward Tigor.
Tapanuli Utara : new life in hills & valleys.
Jakarta:
Times Communication,
1999.
Text.
Turabian Style
Siahaan, Edward Tigor.
Tapanuli Utara : new life in hills & valleys.
Jakarta:
Times Communication,
1999.
Print.