RANCANG BANGUN SISTEM ABSENSI IOT BERBASIS ESP32 TERINTEGRASI GOOGLE SPREADSHEET. j-sika [Internet]. 2026 Jun. 28 [cited 2026 Aug. 20];8(01):1-9. Available from: https://ejournal.unibba.ac.id/index.php/j-sika/article/view/2033