Hariyanto Abdul Jalal
Jakarta RajaGrafindo Persada 2000,
Buku Teks
Johnson, Spencer, author
Elex Media Komputindo, 2004
Buku Teks
Johnson, Spender, author
Elex Media Komputindo, 2004
Buku Teks
Ray, Veronica
Jakarta Gramedia Pustaka Utama 1999,
Buku Teks
Subagya, Hari
Gramedia Pustaka Utama, 2004
Buku Teks