Pfeifer, N. (2009) «Lorne Szabolcsi, Numerical Term Logic (edited by George Englebretsen, foreword by Fred Sommers), Lewiston, New York: The Edwin Mellen Press, 2008, xii+119pp., ISBN 0-7734-5027-0», Cogency. Santiago, CL, 1(2). Disponible en: https://cogency.udp.cl/index.php/cogency/article/view/216 (Accedido: 19octubre2025).