APA
World Health Organization Study Group on General Requirements for the Sterility of Biological Substances (1959 : Geneva), . (1960). Requirements for biological substances 6 : general requirements for the sterility of biological substances : report of a study group [meeting held in Geneva from 20 to 25 April 1959]. Geneva: World Health Organization.
Chicago
World Health Organization Study Group on General Requirements for the Sterility of Biological Substances (1959 : Geneva), . 1960. Requirements for biological substances 6 : general requirements for the sterility of biological substances : report of a study group [meeting held in Geneva from 20 to 25 April 1959]. Geneva: World Health Organization.
Harvard
World Health Organization Study Group on General Requirements for the Sterility of Biological Substances (1959 : Geneva), . (1960). Requirements for biological substances 6 : general requirements for the sterility of biological substances : report of a study group [meeting held in Geneva from 20 to 25 April 1959]. Geneva: World Health Organization.
MLA
World Health Organization Study Group on General Requirements for the Sterility of Biological Substances (1959 : Geneva), . Requirements for biological substances 6 : general requirements for the sterility of biological substances : report of a study group [meeting held in Geneva from 20 to 25 April 1959]. Geneva: World Health Organization. 1960.