Echavarria, Jose Medina, author
New York, N.Y., Unesco
Buku Teks
Ward, John, author
Routledge , 1997
Buku Teks
edited by Eduardo P. Archetti
MacMillan Education, 1987
Buku Teks
Szulc, Tad, author
Atheneum, 1966
Buku Teks
Szulc, Tad, author
Atheneum, 1966
Buku Teks