APA aipamena

Không rõ. (2001). Target Markets. Youth PublishingHouse.

Chicago Style aipamena

Không rõ. Target Markets. Youth PublishingHouse, 2001.

MLA aipamena

Không rõ. Target Markets. Youth PublishingHouse, 2001.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.