The effectiveness of TOEFL app for final-year students of Marine and Fisheries Faculty Universitas Syiah Kuala, IndonesiaRiyan Maulana, Irwan Irwan, Maila Cut Hanum, Mujiburrahman Mujiburrahman and Lidiana LidianaE3S Web Conf., 339 (2022) 06005DOI: https://doi.org/10.1051/e3sconf/202233906005