Desai, A.R.
Popular Book Depot, 1954
Buku Teks
Desai, A.R.
Oxford University Press, 1948
Buku Teks
Costa, Horacio La de
Solidaridad Publishing House, 1965
Buku Teks
Coleman, James S., author
University of California Press, 1958
Buku Teks
Fredrickson, George M., author
Univ. of California Press, 2000
Buku Teks