editor, Stephen R. Gliessman
Springer-Verlag, 1990
Buku Teks
Altieri, Miguel A., author
Westview Press, 1987
Buku Teks
edited by W. Bruce Campbell and Silvia Lopez Ortiz
Springer, 2012
eBooks
Anik Pratiwi, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2020
UI - Tesis (Membership)
Vasey, Daniel E., author
Iowa State University Press, 1992
Buku Teks