PROCTOR, Len. FINGERPRINT PLUS Parallel/Serial Printer Interface with Print Screen Key. Canadian Journal of Learning and Technology, [S. l.], v. 15, n. 2, 1986. DOI: 10.21432/cjlt28720. Disponível em: https://cjlt.ca/index.php/cjlt/article/view/28720. Acesso em: 23 apr. 2026.