edited by Richard E. Mulcahy
Holt, Rinehart and Winston, 1967
Buku Teks
Time Asia, 2011
Majalah, Jurnal, Buletin
Edelstein, Illana
McGraw-Hill, 2013
Buku Teks
Allende, Isabel
Harper Collins Publishers, 1999
Buku Teks
Christensen, Kit R.
McGraw-Hill, 2002
Buku Teks