Gaya APA

Simorangkir, H, R, B. (2018). The Effect of Group Investigation Strategy On Students' Speaking Achievement (A Classroom Action Research of Eighth Grade Students of Junior High School at SMP Negeri 45 Medan in the Year 2018/2019) . : .

Gaya MLA

Simorangkir, Herta, Remita, Br. "The Effect of Group Investigation Strategy On Students' Speaking Achievement (A Classroom Action Research of Eighth Grade Students of Junior High School at SMP Negeri 45 Medan in the Year 2018/2019)". : , 2018. Text.