@book{48115,
	title = {Produktivitas},
	publisher = {PT Elex Media Komputindo , },
	year = {1992},
	series = {Seri ilmu dan seni manajemen bisnis (7)},
	address = {Jakarta, Indonesia : },
	edition = {Timple, A.Dale},
	note = {Judul asal : Productivity}
}