@book{209801,
	author = {CASTLES, Lance and Maurits Simatupang},
	title = {Kehidupan Politik Kresedienan Sumatra : Tapanuli 1915-1940},
	publisher = {Kepustakaan Populer Gramedia},
	year = {2001},
	address = {Jakarta},
	edition = {1}
}