Fakultas Pertanian Universitas Lampung - Jurusan Sosial Ekonomi Pertanian,
Majalah, Jurnal, Buletin
Kuvshinov, I.S.
Gosundarstvennoye Izdatyelstvo Syelskokhzyaistvennoi Literature, 1959
Buku Teks
Samuel S. Kim, editor
Cambridge University Press, 2000
Buku Teks
Boeke, Hendrik Enno., author
Leiden Universitaire Pers 1948
Buku Teks
Tsuru, Shigeto
New York Institute of Pasific Relations 1950
Buku Teks