Phuong, T. H., & Jiuan, T. S. (1990). A study of small exporting firms in Singapore. Universiti Utara Malaysia.
Lua i Stíl Chicago (17ú heag.)Phuong, Ta Huu-, agus Tan Soo- Jiuan. A Study of Small Exporting Firms in Singapore. Malaysia: Universiti Utara Malaysia, 1990.
Lua MLA (9ú heag.)Phuong, Ta Huu-, agus Tan Soo- Jiuan. A Study of Small Exporting Firms in Singapore. Universiti Utara Malaysia, 1990.
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