Ai, mei
China Intercontinental Press, 2009
Buku Teks
Kotter, John P., 1947-
Harvard Business School Press, 2002
Buku Teks
Michael D. Ruslim
Gramedia Pustaka Utama, 2011
Buku Teks
Teilhard de Chardin, Pierre
Collins, 1978
Buku Teks
O`Hanlon, Redmond
Merkmal, 1986
Buku Teks