Gaya APA

Ferliati, R, E., Sari, I, P. (2020). An Analysis Of External Factors Causes Students Difficulties In Learning English In The Era Education ( A Case Study At Second Grade Students Of Smk N 1 Kutasari, Purbalingga) (-). Purwokerto: FKIP UMP.

Gaya MLA

Ferliati, Rosi, Eka., Sari, Indah, Purwito. "An Analysis Of External Factors Causes Students Difficulties In Learning English In The Era Education ( A Case Study At Second Grade Students Of Smk N 1 Kutasari, Purbalingga)". - Purwokerto: FKIP UMP, 2020. Text.