APA (7th ed.) Citation

Nora Fitria, Muhammad Usman, & Nora Sahara. (2023). Duolingo Application for Advancing English Speaking Skills. Yayasan Keluarga Guru Mandiri.

Chicago Style (17th ed.) Citation

Nora Fitria, Muhammad Usman, and Nora Sahara. Duolingo Application for Advancing English Speaking Skills. Yayasan Keluarga Guru Mandiri, 2023.

MLA (9th ed.) Citation

Nora Fitria, et al. Duolingo Application for Advancing English Speaking Skills. Yayasan Keluarga Guru Mandiri, 2023.

Warning: These citations may not always be 100% accurate.