APA
Vernon K., . (1984). Information sources in management and business. London: Butterworths.
Chicago
Vernon Ken, . 1984. Information sources in management and business. London: Butterworths.
Harvard
Vernon K., . (1984). Information sources in management and business. London: Butterworths.
MLA
Vernon Ken, . Information sources in management and business. London: Butterworths. 1984.