« The Equivalence of the Identities: p(q.pr) = (pq.r) and pq.rp = p(qr.P) ». International Journal of Development Mathematics (IJDM) 2, no. 3 (septembre 28, 2025): 094–102. Consulté le novembre 12, 2026. https://ijdm.org.ng/index.php/Journals/article/view/235.