Gill, K. (1993). Process and portfolios in writing instruction. National Council of Teachers of English.
Chicago-čujuhus (17. p.)Gill, Kent. Process and Portfolios in Writing Instruction. Urbana: National Council of Teachers of English, 1993.
MLA-čujuhus (9. p.)Gill, Kent. Process and Portfolios in Writing Instruction. National Council of Teachers of English, 1993.
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