Cook, J. E. H., & Cook, C. P. (1967). Farm bookkeeping. Longmans.
Lua i Stíl Chicago (17ú heag.)Cook, Joyce E. H., agus C. P. Cook. Farm Bookkeeping. Croydon, Vic.: Longmans, 1967.
Lua MLA (8ú heag.)Cook, Joyce E. H., agus C. P. Cook. Farm Bookkeeping. Longmans, 1967.
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