Briggs, A., & Pollard, S. (1959). Robert Owen in Retrospect. A Co-operative Pioneer. Loughborough: Coperative Union.
Citazione stile Chigago Style (17a edizione)Briggs, A., e Sidney Pollard. Robert Owen in Retrospect. A Co-operative Pioneer. Loughborough: Coperative Union, 1959.
Citatione MLA (8a ed.)Briggs, A., e Sidney Pollard. Robert Owen in Retrospect. A Co-operative Pioneer. Loughborough: Coperative Union, 1959.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.