Seri Pustaka Sains: Menemukan sains / FARNDON, John APSARI, Rahma GRAHAM, Ian ISMAYANTI, Yosephine Ratih JANU K, Evi text Bandung : Pkar Raya, 2005 ind Indeks : hlm. 38-40 Judul asli : Science Library Discovering Science SAINS URN:ISBN:9795342576