00355     2200121   4500020001800000084001100018090001700029100002100046245008200067260003800149300002000187650002600207  a9781452226101  a001.42  a001.42 Joh r  aJohn W. Creswell10aResearch design: Pendekatan metode kualitatif, kuantitatif dan campuran Ed. 4  aYogyakartabPustaka Pelajarc2019  a368 hlm.; 24 cm  ametodologi penelitian