Gaya APA
Roy, Ewell Paul.. (1981).
Cooperatives : development, principles and management / Ewell Paul Roy (4th ed.).
Danville, Illinois:
The Interstate Printers n Publishers Inc.
Gaya Chicago
Roy, Ewell Paul..
Cooperatives : development, principles and management / Ewell Paul Roy.
4th ed.
Danville, Illinois:
The Interstate Printers n Publishers Inc,
1981.
Text.
Gaya MLA
Roy, Ewell Paul..
Cooperatives : development, principles and management / Ewell Paul Roy.
4th ed.
Danville, Illinois:
The Interstate Printers n Publishers Inc,
1981.
Text.
Gaya Turabian
Roy, Ewell Paul..
Cooperatives : development, principles and management / Ewell Paul Roy.
4th ed.
Danville, Illinois:
The Interstate Printers n Publishers Inc,
1981.
Print.