Balmer, L.
Pitman, 1970
Buku Teks
Dieterle, D. Lyle, author
Houghton Mifflin , 1962
Buku Teks
Dhogal, P.S., author
Tata McGraw-Hill, 1995
Buku Teks
Brater, Ernest F. (Ernest Frederick), 1912-2003, author
McGraw-Hill, 1976
Buku Teks
Brater, Ernest F. (Ernest Frederick), 1912-2003, author
McGraw-Hill, 1976
Buku Referensi