Henderson, Julian, author
Food and Agriculture organization of the UN, 1970
Buku Teks
Friedmann, Wolfgang, 1907-1972, author
Little, Brown, 1959
Buku Teks
Indonesian Embassy, 1967
Buku Teks
Aharoni, Yair, author
Harvard University, 1966
Buku Teks
University of Surrey, 2004
Buku Teks