APA Style
Kohls, R.L., Samuelson,P.A. (1970).
Economics (8th Edition) .
New York:
McGraw- Hill Book Company.
Chicago Style
Kohls, R.L., Samuelson,P.A.
Economics (8th Edition).
New York:
McGraw- Hill Book Company,
1970.
.
MLA Style
Kohls, R.L., Samuelson,P.A.
Economics (8th Edition).
New York:
McGraw- Hill Book Company,
1970.
.
Turabian Style
Kohls, R.L., Samuelson,P.A.
Economics (8th Edition).
New York:
McGraw- Hill Book Company,
1970.
.