Basu, Saroj Kumar
University of Calcutta India Press , 1953
Buku Teks
Australian Government Publishing Service , 1979
Buku Teks
Lewis, William Arthur, 1915-
University of Ghana by the Ghana Pub, 1971
Buku Teks
N. Lim-Han
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 1963
UI - Skripsi Membership
Felix O. Soebagio
Universitas Indonesia, 1993
Buku Teks