DR. AHMAD SHAHZAD; PROF. DR. NAVEED SHAHZAD. Origin of the writing system and alphabets of Punjabi and Urdu. Negotiations, [S. l.], v. 5, n. 2, p. 01–26, 2025. Disponível em: https://www.journals.mehkaa.com/index.php/negotiations/article/view/165. Acesso em: 17 apr. 2026.