Gaya APA

1905111097, E, D, P, F. (2025). the students perceptions of using duo lingo to improve vocabulary knowledge at the english study program of universitas riau . Pekanbaru: Universitas Riau – FKIP – Bahasa Inggris.

Gaya MLA

1905111097, ELFIANA, DWI, PUTRI, FUADI. "the students perceptions of using duo lingo to improve vocabulary knowledge at the english study program of universitas riau". Pekanbaru: Universitas Riau – FKIP – Bahasa Inggris, 2025. CD Skripsi.