Plunkett Foundation for Co-operative Studies. Agricultural Co-operation Organisation Chart. London: Plunkett Foundation for Co-operative Studies.
Chicago-referens (17:e uppl.)Plunkett Foundation for Co-operative Studies. Agricultural Co-operation Organisation Chart. London: Plunkett Foundation for Co-operative Studies.
MLA-referens (8:e uppl.)Plunkett Foundation for Co-operative Studies. Agricultural Co-operation Organisation Chart. London: Plunkett Foundation for Co-operative Studies.
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