@book{176820,
	author = {Mardhiah Mustafa,},
	title = {Sains dan Alam Semesta},
	publisher = {Pustaka Dasar Jaya Sdn. Bhd.,},
	year = {2015.},
	series = {Siri Sains Manusia dan Alam},
	address = {Seri Kembangan, Selangor:}
}