APA aipamena

(1994). Sigma cell culture: 1995 catalogue & price list. Belgium: Sigma Chemie.

Chicago Style aipamena

Sigma Cell Culture: 1995 Catalogue & Price List. Belgium: Sigma Chemie, 1994.

MLA aipamena

Sigma Cell Culture: 1995 Catalogue & Price List. Belgium: Sigma Chemie, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.