Crompton, Samuel Willard, author
Karisma, 2007
Buku Referensi
Crompton, Samuel Willard, author
Karisma, 2007
Buku Teks
Krystal, Barbara, editor; Soetrisno, Eddy, editor
Progres, [1990]
Buku Referensi
Hart, Michael H., author
Pustaka Jaya, 2003
Buku Teks
Hart, Michael H., author
Pustaka Jaya, 1985
Buku Referensi