Khairun Nissa V. The Increasing of Greeting Card Writing Skills Through Greeting Cards Photo Maker Application for The Viii A Grade Students in SMP Negeri 1 Plumpang Academic Year 2016/2017. retco [Internet]. 2023 Feb. 9 [cited 2024 Jul. 23];8(1):99-112. Available from: http://prosiding.unirow.ac.id/index.php/retco/article/view/1741