Wen Kwei Liao
Kegan Paul, 1933
Buku Teks
Kivisto, Peter
Sage, 2013
Buku Teks
Bierens de Haan, Johan, 1892-
Pembangunan, 1962
Buku Teks
Laeyendecker, L.
Gramedia, 1983
Buku Teks
edited by Harry Elmer Barnes
The University of Chicago Press, 1958
Buku Teks