Spencer, Cornelia
John Day , 1953
Buku Teks
Romulo, Carlos P.
Rinehart and Wonston, 1961
Buku Teks
Castillo, Teofilo del
Associated Authors Company, 1949
Buku Teks
Romulo, Carlos P.
The University of North Carolina Press, 1956
Buku Teks
Morrison, John, author
Penguin Books, 1985
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