Ibrahim Abdullah Assegaf, author
Mario Grafika, 1991
Buku Referensi
Estes, Ralph, author
Erlangga, 1994
Buku Referensi
Macmillan Education, 2002
Buku Referensi
Houghton Miffin, 2000
Buku Referensi
London: Tiger Books International, 1994,
Buku Referensi