De Leon, H. S. (1969). The law on negotiable instruments (With documents of title). s.n.
Chicago-viite (17. p.)De Leon, Hector S. The Law on Negotiable Instruments (With Documents of Title). [Manilan: s.n, 1969.
MLA-viite (9. p.)De Leon, Hector S. The Law on Negotiable Instruments (With Documents of Title). s.n, 1969.
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