REGIONAL, H. C. (1973). Traditional Buildings Of Indonesia Batak Toba. Building Research Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रREGIONAL, Houshing Centre. Traditional Buildings Of Indonesia Batak Toba. Building Research Institute, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रREGIONAL, Houshing Centre. Traditional Buildings Of Indonesia Batak Toba. Building Research Institute, 1973.
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