Bittel, Lester Robert
Pustaka Binaman Pressindo , 1994
Buku Teks
Agus Dharma
Rajawali Pers, 1991
Buku Teks
Haimann, Theo
South-Western Pub., 1982
Buku Teks
Kay, Brian R.
McGraw-Hill, 1961
Buku Teks
Tagliaferri, Louis E.
John Wiley & Sons, 1979
Buku Teks