APA način citiranja

Johnson, R. H. (1975). Characterization of group A streptococcal R-28 antigen purified by hydroxyapatite column chromatography.

Čikaški stil citiranja

Johnson, R H. Characterization of Group A Streptococcal R-28 Antigen Purified By Hydroxyapatite Column Chromatography. 1975.

MLA način citiranja

Johnson, R H. Characterization of Group A Streptococcal R-28 Antigen Purified By Hydroxyapatite Column Chromatography. 1975.