Gaya APA

Kasali, R., Wahyuni, D, E, D. (2019). A Study On Factors Causing Students Difficulties In Speaking English (-). Purwokerto: FKIP UMP.

Gaya MLA

Kasali, Rhenald., Wahyuni, Dinar, Esa, Dwi. "A Study On Factors Causing Students Difficulties In Speaking English". - Purwokerto: FKIP UMP, 2019. Text.