Gaya APA
Elementary Economics. (1976).
London:
Macmillan Publishing.
Gaya Chicago
Elementary Economics.
Ed. 4.
London:
Macmillan Publishing,
1976.
.
Gaya MLA
Elementary Economics.
Ed. 4.
London:
Macmillan Publishing,
1976.
.
Gaya Turabian
Elementary Economics.
London:
Macmillan Publishing,
1976.
.