Phan, Thi Mong Kieu. “THE USE OF PORTFOLIOS ON EFL YOUNG LEARNERS’ SENTENCE WRITING: A CASE AT AN ENGLISH LANGUAGE CENTRE IN THE MEKONG DELTA”. JOURNAL OF INQUIRY INTO LANGUAGES AND CULTURES, vol. 2, no. 2, Aug. 2018, pp. 151-63, https://doi.org/10.63506/jilc.0202.226.