[publisher not identified], [date of publication not identified]
Buku Referensi
P.N. Pertjekan Negara, 1964
Buku Teks
Hanna, Williard A.
American University Field Staff, 1964
Buku Teks
Artikel Jurnal
Jie Chong, Henry Ren, author
Taiwan Foundation for Democracy, 2020
Artikel Jurnal