APA Style

Prihantoro, . (2013). The english sound : a pronounciatin practice book/Prihantoro . Curup: Lp2 Stain Curup.

MLA Style

Prihantoro, . "The english sound : a pronounciatin practice book/Prihantoro". Curup: Lp2 Stain Curup, 2013. Text.