Gaya APA
Keirstead, B.S.. (1948).
The theory of economic change .
Canada:
The MacMilan Compay.
Gaya Chicago
Keirstead, B.S..
The theory of economic change.
Canada:
The MacMilan Compay,
1948.
Text.
Gaya MLA
Keirstead, B.S..
The theory of economic change.
Canada:
The MacMilan Compay,
1948.
Text.
Gaya Turabian
Keirstead, B.S..
The theory of economic change.
Canada:
The MacMilan Compay,
1948.
Print.