Hutabarat, Binsar, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1968
UI - Skripsi Membership
Adnis, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1965
UI - Skripsi Membership
White, W.T.; Last, P.R.; Stevents, J.D.; Yearsley, G.K.; Fahmi; Dharmadi
Australian Center for International Agricultural Research, 2006
Buku Referensi
Mohamad Ichsan, author
Fakultas Teknik Universitas Indonesia, 1993
UI - Skripsi Membership
Tubagus Ade Yusuf, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1995
UI - Skripsi Membership