Briggs, A., & Pollard, S. (1959). Robert Owen in Retrospect. A Co-operative Pioneer. Loughborough: Coperative Union.
Chicago-viite (17. p.)Briggs, A., ja Sidney Pollard. Robert Owen in Retrospect. A Co-operative Pioneer. Loughborough: Coperative Union, 1959.
MLA-viite (8. p.)Briggs, A., ja Sidney Pollard. Robert Owen in Retrospect. A Co-operative Pioneer. Loughborough: Coperative Union, 1959.
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