Gaya APA

pertiwi, R, E. et al (2013). The Content Validity Of English Summative Testfor The Seventh Grade Students Of SMPN 31 Southjakarta 2012/2013 Academic Year . : .

Gaya MLA

pertiwi, Rahmania, Eka. et al. "The Content Validity Of English Summative Testfor The Seventh Grade Students Of SMPN 31 Southjakarta 2012/2013 Academic Year ". : , 2013. Text.