Gaya APA
Lipsey, Richard G., Steiner, Peter O., Purvis, Dauglas D., Courant, Paul N.. (1990).
Economics, 9th ed. (10th ed.).
s.l.:
HarperCollins College.
Gaya Chicago
Lipsey, Richard G., Steiner, Peter O., Purvis, Dauglas D., Courant, Paul N..
Economics, 9th ed..
10th ed.
s.l.:
HarperCollins College,
1990.
Text.
Gaya MLA
Lipsey, Richard G., Steiner, Peter O., Purvis, Dauglas D., Courant, Paul N..
Economics, 9th ed..
10th ed.
s.l.:
HarperCollins College,
1990.
Text.
Gaya Turabian
Lipsey, Richard G., Steiner, Peter O., Purvis, Dauglas D., Courant, Paul N..
Economics, 9th ed..
10th ed.
s.l.:
HarperCollins College,
1990.
Print.