Books
For All the People: Uncovering the Hidden History of Cooperation, Cooperative Movements, and Communalism in America, John Curl and Ishmael Reed
Cooperatives and local development: theory and applications for the 21st century, Christopher Merrett and Norman Walzer
Websites
A short history of cooperation and mutuality, Ed Mayo, Cooperatives UK
Cooperatives: Principles and practices in the 21st century, Kimberly Zueli and Robert Cropp