Gaya APA

Pandiangan, L., Rizky, L, P. (2018). Teacher`s Challenges In Holding Group Works In Efl Classes (-). Purwokerto: FKIP UMP.

Gaya MLA

Pandiangan, Liberti., Rizky, Laila, Putri. "Teacher`s Challenges In Holding Group Works In Efl Classes". - Purwokerto: FKIP UMP, 2018. Text.