Gaya APA

SYAHID, A. (2010). A Comparative study on teaching writing by paper-based portofolio learning and electronic-based . : Pascasarjana UNS.

Gaya MLA

SYAHID, Abdul. "A Comparative study on teaching writing by paper-based portofolio learning and electronic-based". : Pascasarjana UNS, 2010. Text.