1
Por Ta, Huu Phuong.
Publicado em 1989
“...National University of Singapore. Faculty of Business Administration....”Publicado em 1989
Livro
2
Publicado em 1983
“...National University of Singapore. Faculty of Business Administration....”
Periódico
3
Publicado em 1992
“...National University of Singapore. Faculty of Business Administration....”
Periódico