Gaya APA
Petroutsos, Evangelos. (1998).
Mastering Visual Basic 6 .
USA:
SYBEX Inc.
Gaya Chicago
Petroutsos, Evangelos.
Mastering Visual Basic 6.
USA:
SYBEX Inc,
1998.
Text.
Gaya MLA
Petroutsos, Evangelos.
Mastering Visual Basic 6.
USA:
SYBEX Inc,
1998.
Text.
Gaya Turabian
Petroutsos, Evangelos.
Mastering Visual Basic 6.
USA:
SYBEX Inc,
1998.
Print.