Gaya APA
Basic Systems Analysis. (1984).
Singapore:
ELBS.
Gaya Chicago
Basic Systems Analysis.
.
Singapore:
ELBS,
1984.
Text.
Gaya MLA
Basic Systems Analysis.
.
Singapore:
ELBS,
1984.
Text.
Gaya Turabian
Basic Systems Analysis.
Singapore:
ELBS,
1984.
Print.