Gaya APA

mm., Y, D, S, M, N, J, S. et al (2017). The Relationship between Self-Efficacy and Students’ Speaking Skill of the Tenth Grade Students of SMA Muhammadiyah 15 Jakarta in the 2016/2017 Academic Year . Jakarta: .

Gaya MLA

mm., Yusdi, Daulay,, Se.,, Mm.;, Nendi, Juhandi,, Se.,. et al. "The Relationship between Self-Efficacy and Students’ Speaking Skill of the Tenth Grade Students of SMA Muhammadiyah 15 Jakarta in the 2016/2017 Academic Year". Jakarta: , 2017. Text.