Gaya APA
General Statistics. (1971).
Philippines:
Addison Wesley Publishing.
Gaya Chicago
General Statistics.
.
Philippines:
Addison Wesley Publishing,
1971.
.
Gaya MLA
General Statistics.
.
Philippines:
Addison Wesley Publishing,
1971.
.
Gaya Turabian
General Statistics.
Philippines:
Addison Wesley Publishing,
1971.
.