Lall, Vikram, author
Malaysia JF Publishing, 2014
Buku Referensi
Moore, Keith L., author
Saunders, 2016
Buku Teks
Higgins, Hugh, author
Heinemann Educational, 1975
Buku Teks
Weller, Archie
Pan Books , 1982
Koleksi Publik
Weller, J. Marvin
McGraw-Hill, 1969
Buku Teks