Gaya APA

LIPSEY, G Richard. (1981). ECONOMICS (6). : .

Gaya Chicago

LIPSEY, G Richard. ECONOMICS. 6 : , 1981. Text.

Gaya MLA

LIPSEY, G Richard. ECONOMICS. 6 : , 1981. Text.

Gaya Turabian

LIPSEY, G Richard. ECONOMICS. 6 : , 1981. Print.