Foreign Language, 1960
Buku Teks
edited by Andrew Rothstein and Clemens Dutt
Foreign Languages Pub. House, 1960
Buku Teks
State Secretariat of The Republic of Indonesia, 2004
Buku Referensi
Smedley, Agnes
The Vanguars Press, 1934
Buku Teks
Sukarno, author
Dakarta Dewi Niaga 1965,
Buku Teks