Pink, T. (1970). English Grammer Co-Opsition Carressponance. Cassellasca Ltd.
Lua i Stíl Chicago (17ú heag.)Pink, Thoumas. English Grammer Co-Opsition Carressponance. London: Cassellasca Ltd, 1970.
Lua MLA (9ú heag.)Pink, Thoumas. English Grammer Co-Opsition Carressponance. Cassellasca Ltd, 1970.
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