Philip King , 1993
Buku Referensi
Leman
Gramedia Pustaka Utama, 2007
Buku Teks SO
Feynman, Richard Phillips
Perseus Books, 1999
Buku Teks SO
Sweetman, David
Hodder & Stoughton , 1990
Buku Teks SO
Bloomfield, Louis A.
John Wiley & Sons, 2006
Buku Teks SO