Humairoh S, Roza V, Reflinda R, Melani M. The Implementation of Numbered Heads Together (NHT) Technique in Teaching Speaking Skill at IX Grade of SMPN 7 Bukitinggi. CE [Internet]. 2024Jun.18 [cited 2024Jul.3];5(2):119-30. Available from: https://pusdikra-publishing.com/index.php/josr/article/view/1935