Dhatu Sitaresmi and Daniel Ginting (2019) 2.1._Dhatu_ICOLTIC_The_Challenge_of_Teaching. Proceeding - International Conference on Language Teaching and Culture (ICOLTIC) 2019. pp. 546-553. ISSN ISBN. 978-623-232-344-5

Dhatu Sitaresmi and Daniel Ginting (2019) 29.1._Daniel_Ginting_ICOLTIC_2019_The_Challenged_of_Teaching. Proceeding 2019 International Conference on Language Teaching and Culture: New Trajectories on the Teaching of Foreign Languages in 4.0 Era.. pp. 546-553. ISSN ISBN: 378-623-232-344-5