@book{88652,
	author = {Sitorus, D     C and Nasution, H. Kamal,},
	title = {Menudju efficiency penggunaan pesawat-telepon /},
	publisher = {Don,},
	year = {[1960?]},
	address = {Tjimahi :},
	note = {Cover title: Bitjara setjara efficient.}
}