Gaya APA
Ewing,Richhard. (1999).
VISITREND + VISIPLOT (Pertama).
USA:
Persoal Software Inc.
Gaya Chicago
Ewing,Richhard.
VISITREND + VISIPLOT.
Pertama
USA:
Persoal Software Inc,
1999.
Text.
Gaya MLA
Ewing,Richhard.
VISITREND + VISIPLOT.
Pertama
USA:
Persoal Software Inc,
1999.
Text.
Gaya Turabian
Ewing,Richhard.
VISITREND + VISIPLOT.
Pertama
USA:
Persoal Software Inc,
1999.
Print.