Bittel, Lester Robert
Pustaka Binaman Pressindo , 1994
Buku Teks
Agus Dharma
Rajawali Pers, 1991
Buku Teks
Kay, Brian R.
McGraw-Hill Book Company, Inc, 1961
Buku Teks
Tagliaferri, Louise E.
John Wiley & Sons, 1979
Buku Teks
Boyd, Branford B.
McGraw-Hill , 1984
Buku Teks