Gaya APA

SYAHID, A. (2010). A comparative study on teaching writing by paper-based portofolio learning and electronic-based . : Universitas Sebelas Maret.

Gaya MLA

SYAHID, Abdul. "A comparative study on teaching writing by paper-based portofolio learning and electronic-based". : Universitas Sebelas Maret, 2010. Thesis.