Penggayaan APA
Harper. (1975).
Operational Research .
London:
Mc Donald & Evans.
Chicago Style
Harper.
Operational Research.
London:
Mc Donald & Evans,
1975.
Text.
MLA Style
Harper.
Operational Research.
London:
Mc Donald & Evans,
1975.
Text.
Turabian Style
Harper.
Operational Research.
London:
Mc Donald & Evans,
1975.
Print.