Unesco Regional Office for Education in Asia and the Pacific, 1986
Buku Teks
Artikel Jurnal
Food and Agriculture Organization of the United Nations , 1985
Buku Teks
editor, June H.L. Wong; writers, Meng Yew Choong, Chin Mui Yoon
Star publications, 2011
Buku Referensi
Bunin, Ivan
Foreign Languages Publishing House, [Date of publication not identified]
Koleksi Publik