De Leon, H. S. (1969). The law on negotiable instruments (With documents of title). s.n.
Chicagoスタイル(17版)引用形式De Leon, Hector S. The Law on Negotiable Instruments (With Documents of Title). [Manilan: s.n, 1969.
MLA(9版)引用形式De Leon, Hector S. The Law on Negotiable Instruments (With Documents of Title). s.n, 1969.
警告: この引用は必ずしも正確ではありません.