LUBIS, N. A.; SIHOMBING, J. sion; SIAHAAN, M. F.; DEWI, N. A.; HERAWATI, N. THE RELATIONSHIP OF PHYSICAL ACTIVITY LEVEL AND LENGTH OF WORKING TIME TO THE MENSTRUAL CYCLE IN FEMALE WORKERS. Algebra : Jurnal Pendidikan, Sosial dan Sains, [S. l.], v. 5, n. 2, p. 371–375, 2025. DOI: 10.58432/algebra.v5i2.1456. Disponível em: https://ejournal.yana.or.id/index.php/algebra/article/view/1456. Acesso em: 17 sep. 2026.