Spencer, Herbert, author
Watts & Co., 1950
Buku Teks
Maritain, Jacques
The University of Chicago Press, 1951
Buku Teks
Ikrar Nusa Bhakti, Irine H. Gayatri, editor; in cooperation with National Democratic Institute for International
Mizan, 2001
Buku Teks
Tengku Rika Valentina, author
2011
Artikel Jurnal
1947
Buku Teks