Sutcliffe, H.
Longman, 1964
Buku Teks
Ryder, John D. (John Douglas)
McGraw-Hill, [date of publication not identified]
Buku Teks
Metha, V.K.
S. Chand, 1997
Buku Teks
Grob, Bernard
McGraw-Hill, 1977
Buku Teks
Mitchell, F. H.
Addison-Wesley, 1959
Buku Teks