Koch, E. (1985). Officialisation of cooperatives in developing countries. Fridrich-Ebert-Stiftung.
Chicago-viite (17. p.)Koch, Eckard. Officialisation of Cooperatives in Developing Countries. Bonn: Fridrich-Ebert-Stiftung, 1985.
MLA-viite (9. p.)Koch, Eckard. Officialisation of Cooperatives in Developing Countries. Fridrich-Ebert-Stiftung, 1985.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.