Frankel, Michael
McGraw-Hill, 2002
Buku Referensi
Frankel, Michael
McGraw-Hill, 2012
Buku Teks
Ziu, Christopher G.,
McGraw-Hill, 1995
Buku Teks
Kentish, D. N. W.
McGraw-Hill, 1982
Buku Teks
edited by Mohinder L. Nayyar
McGraw-Hill, 2000
Buku Referensi