Maboloc, Christopher Ryan. Elements of logic : an integrative approach / Christopher Ryan Maboloc, Edgar B. Pascua, II. - Manila : Rex Book Store, 2008. - xi, 142 pages : illustration ; 23 cm. Includes bibliographical references and index. ISBN: 9789712351860 Subjects--Topical Terms: Logic. LC Class. No.: BC108. M32 2008 F