APA-viite (7. p.)

Gill, K. (1993). Process and portfolios in writing instruction. National Council of Teachers of English.

Chicago-viite (17. p.)

Gill, Kent. Process and Portfolios in Writing Instruction. Urbana: National Council of Teachers of English, 1993.

MLA-viite (9. p.)

Gill, Kent. Process and Portfolios in Writing Instruction. National Council of Teachers of English, 1993.