APA
John N., . (1991). Managing food hygiene. London: Macmillan Publishing Company.
Chicago
John Nicholas, . 1991. Managing food hygiene. London: Macmillan Publishing Company.
Harvard
John N., . (1991). Managing food hygiene. London: Macmillan Publishing Company.
MLA
John Nicholas, . Managing food hygiene. London: Macmillan Publishing Company. 1991.