APA aipamena

Guenthner, J. (2002). The International Potato Industry. ELSEVIER.

Chicago Style aipamena

Guenthner, Joseph. The International Potato Industry. ELSEVIER, 2002.

MLA aipamena

Guenthner, Joseph. The International Potato Industry. ELSEVIER, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.