@book{221856,
	author = {DARMAPUTERA, Eka and Rika Uli Napitupulu- Simarangkir},
	title = {Tegak, Sebab didirikan di atas batu},
	publisher = {BPK  Gunung Mulia},
	year = {2008},
	address = {Jakarta},
	edition = {4}
}