José Rizal National Centennial Commission,, 1962.
Buku Teks
Runes, Dagobert D.
Philosophical Library, 1959
Buku Referensi
Franklin, Benjamin
Liberal Arts Press, 1949
Buku Teks
Saito, Hirosi
Boston Marshall Jones 1935
Buku Teks
compiled and with commentary by Teresa Balough
University of Western Australia, 1982
Buku Teks