Gaya APA
sharpe, william f.. (1990).
investments (4 th.ed.).
englewood chiffs:
Apress.
Gaya Chicago
sharpe, william f..
investments.
4 th.ed.
englewood chiffs:
Apress,
1990.
.
Gaya MLA
sharpe, william f..
investments.
4 th.ed.
englewood chiffs:
Apress,
1990.
.
Gaya Turabian
sharpe, william f..
investments.
4 th.ed.
englewood chiffs:
Apress,
1990.
.