Apriliadewi, P. (2017) “AN ANALYSIS OF THE IMPLEMENTATION OF PROBLEM BASED LEARNING IN LEARNING ENGLISH AT THE XI GRADE SCIENCE CLASS OF SMA NEGERI 1 SINGARAJA IN THE ACADEMIC YEAR 2015/2016”, International Journal of Language and Literature, 1(1), pp. 11–18. doi: 10.23887/ijll.v1i1.9613.