Penggayaan APA

SINATRA, Arni Ferra. (2009). Optimizing task-based activity to improve students speaking ability . : Pascasarjana UNS.

Chicago Style

SINATRA, Arni Ferra. Optimizing task-based activity to improve students speaking ability. : Pascasarjana UNS, 2009. Text.

MLA Style

SINATRA, Arni Ferra. Optimizing task-based activity to improve students speaking ability. : Pascasarjana UNS, 2009. Text.

Turabian Style

SINATRA, Arni Ferra. Optimizing task-based activity to improve students speaking ability. : Pascasarjana UNS, 2009. Print.