Sitohang B, Widagdo TE. PQL: KONVERSI SINTAKS SQL MENJADI SINTAKS PQL. informatika [Internet]. 2008 Aug. 15 [cited 2025 Oct. 4];8(2):pp. 79-86. Available from: https://jurnalinformatika.petra.ac.id/index.php/inf/article/view/16771