Desai, A.R.
Oxford University Press, 1948
Buku Teks
Costa, Horacio La de
Solidaridad Publishing House, 1965
Buku Teks
Coleman, James S.
University of California Press, 1958
Buku Teks
Fredrickson, George M.
Univ. of California Press, 2000
Buku Teks
Anastasiou, Michaelangelo
Routledge, 2020
Buku Teks