APA
Bullock W., . (1963). The man who discovered penicillin. London: Faber &faber.
Chicago
Bullock W.AC, . 1963. The man who discovered penicillin. London: Faber &faber.
Harvard
Bullock W., . (1963). The man who discovered penicillin. London: Faber &faber.
MLA
Bullock W.AC, . The man who discovered penicillin. London: Faber &faber. 1963.