author = { Meirida, U AND Johar, R AND Ahmad, A },

title = { The ability of junior high school students in drawing 3D pyramids },

publisher = {IOP Publishing},

isbn = {1742-6596},

isbn = {1742-6588},

keywords = { General Physics and Astronomy },

year = {2020},

url = { http://slubdd.de/katalog?TN_libero_mab2 }