APA
Happold f., . (1967). Medicine at risk. The queen anne press limited, London: .
Chicago
Happold f.h, . 1967. Medicine at risk. The queen anne press limited, London: .
Harvard
Happold f., . (1967). Medicine at risk. The queen anne press limited, London: .
MLA
Happold f.h, . Medicine at risk. The queen anne press limited, London: . 1967.