Birkinshaw, Julian, author
Jossey-Bass, 2013
Buku Teks
Agus Dharma, author
Rajawali Pers, 1991
Buku Teks
Torpey, William G.,
D.Van Nostrand, 1953
Buku Teks
Hadari Nawawi, author
Gadjah Mada University Press, 2006
Buku Teks
J. Winardi, author
RajaGrafindo Persada, 2002
Buku Teks