APA aipamena

SPENCER, D. E. (1990). Studi guide parkin economics. Addison-Wesley Pub.

Chicago Style aipamena

SPENCER, David E. Studi Guide Parkin Economics. Reading: Addison-Wesley Pub, 1990.

MLA aipamena

SPENCER, David E. Studi Guide Parkin Economics. Addison-Wesley Pub, 1990.