Afdeling Agrarische Geschiedenis, Landbouwhogeschool
Wageningen, 1985
Buku Teks
Kurniawan Junaedhie, author
Gramedia Pustaka Utama, 1995
Buku Teks
Golay, Frank H.
Cornell University, 1976
Buku Referensi
edited by Jim E. Cole, James W. Williams ; translated by Andy Pujiriyanto
The Haworth Press, 1992
Buku Teks
editors by Jim E. Cole; Jackie Zajanc
The Haworth Press, 1987
Buku Teks