De Leon, Hector S. The Philippine negotiable instruments law : (and allied laws) annotated / Hector S. De Leon and Hector M. De Leon, Jr. - 2016 edition - Manila : Rex Book Store / 2016. - 661 pages : 24 cm. ISBN: 9789712380372 LC Class. No.: KPM5625.51.N3 / D4 2016