APA (7th ed.) Citation

Tabssam, H. A., Chattha, S. A., Javeed, M. F., & Hayat, A. Sentiment analysis of user reviews: Exploring Duolingo and Babbel in English language learning. Frontiers Media S.A.

Chicago Style (17th ed.) Citation

Tabssam, Husnat Ahmed, Saima Akhtar Chattha, Muhammad Farooq Javeed, and Ali Hayat. Sentiment Analysis of User Reviews: Exploring Duolingo and Babbel in English Language Learning. Frontiers Media S.A.

MLA (9th ed.) Citation

Tabssam, Husnat Ahmed, et al. Sentiment Analysis of User Reviews: Exploring Duolingo and Babbel in English Language Learning. Frontiers Media S.A.

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