Perkins, Dwight, H.
Aldine Publishing Company, 1969
Buku Teks
Buck, John Lossing, 1890-1975
Frederick A. Praeger , 1966
Buku Teks
Report of a SEADAG Rural Development Seminar Meeting, 1969
Buku Teks
Buck, John Lossing, 1890-1975
The Commercial Press, 1947
Buku Teks
University of Tokyo Press, 1969
Buku Teks