1
nork Ta, Huu Phuong.
Argitaratua 1989
“...National University of Singapore. Faculty of Business Administration....”Argitaratua 1989
Liburua
2
Argitaratua 1983
“...National University of Singapore. Faculty of Business Administration....”
Aldizkaria
3
Argitaratua 1992
“...National University of Singapore. Faculty of Business Administration....”
Aldizkaria