Gaya APA

m.m., D, N, J, M, ;, Y, D, S. et al (2018). Factor Contributing Secondary School Difficulties in Speaking English . Jakarta: .

Gaya MLA

m.m., Dr., Nendi, Juhandi.,, M.m., ;, Yusdi, Daulay.,, S.e.,. et al. "Factor Contributing Secondary School Difficulties in Speaking English". Jakarta: , 2018. Text.