Rikizaputra, R., and K. Sari. “THE RELATIONSHIP BETWEEN ANXIETY AND RETENTION TOWARDS LEARNING ACHIEVEMENT REMEDIAL ON MATERI SKELETON SYSTEM IN CLASS VIII SMP NEGERI 30 PEKANBARU ACADEMIC YEAR 2018/2019”. Bio-Lectura : Jurnal Pendidikan Biologi, Vol. 6, no. 1, Apr. 2019, pp. 78-86, https://journal.unilak.ac.id/index.php/BL/article/view/2696.