Holyoake, G. J. (1908). The history of co-operation revised and completed (Revised and completed.). London: Fisher Unwin.
Cita Chicago (17th ed.)Holyoake, George Jacob. The History of Co-operation Revised and Completed. Revised and completed. London: Fisher Unwin, 1908.
Cita MLA (8th ed.)Holyoake, George Jacob. The History of Co-operation Revised and Completed. Revised and completed. London: Fisher Unwin, 1908.
Atenció: Aquestes cites poden no estar 100% correctes.