APA aipamena

Smith,Peter, & Begg,David. (1997). Economics workbook (5.). England.

Chicago Style aipamena

Smith,Peter, and Begg,David. Economics Workbook. 5. McGraw Hill: England, 1997.

MLA aipamena

Smith,Peter, and Begg,David. Economics Workbook. 5. England, 1997.