Indonesia Tunggal, 1961
Buku Teks
Oxford University Press, 1951
Buku Teks
Fischer, George, author
Harvard University Press, 1952
Buku Teks
Stahl, Kathleen M
Faber and Faber Limited, s.a.
Buku Teks
Hubbard, Leonard E., author
MacMillan, 1939
Buku Teks