Hoover`s handbook of American business 1992
edited by Gary Hoover, Alta Campbell, Patrick Spain
The Reference Press, 1991
 Buku Referensi
Voorhis, Jerry
American cooperatives where they come from ... , what they do ..., where they are going ...
Harper & Row, 1961
 Buku Teks
Kislev, Yoav
Credit cooperatives in Israeli agriculture
World Bank, 1989
 Buku Teks
De Leon, Hector S.
Textbook on agrarian reform and taxation(with cooperatives)
Central Lawbook, 1975
 Buku Teks
Kehoe, Patrick E.
Cooperatives and condominiums / by Patrick E. Kehoe
Oceana Publications, Inc., 1974
 Buku Teks