STEINHOFF, D. The World of Businnes, Volume 2. Grolier Incoporated.
Chicago Style aipamenaSTEINHOFF, Dan. The World of Businnes, Volume 2. Grolier Incoporated.
MLA aipamenaSTEINHOFF, Dan. The World of Businnes, Volume 2. Grolier Incoporated.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.