Gaya APA

perkasa, M, F, A. et al (2013). The relationship between grammar mastery and writing skill of the eighth grade studen at SMPN 1 Babelan in 2012/2013 academic year . Jakarta: fkip uhamka.

Gaya MLA

perkasa, Muhamad, Febri, Akbar. et al. "The relationship between grammar mastery and writing skill of the eighth grade studen at SMPN 1 Babelan in 2012/2013 academic year". Jakarta: fkip uhamka, 2013. Text.