David, J. S. (1965). Know the Manila Stock Exchange: First step to Philippine investment. s.n.
Lua i Stíl Chicago (17ú heag.)David, Josefina S. Know the Manila Stock Exchange: First Step to Philippine Investment. [Manila: s.n, 1965.
Lua MLA (9ú heag.)David, Josefina S. Know the Manila Stock Exchange: First Step to Philippine Investment. s.n, 1965.
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