APA

department of statistics and research, . (1991). industrial statistics 1990. nicosia: .

Chicago

department of statistics and research, . 1991. industrial statistics 1990. nicosia: .

Harvard

department of statistics and research, . (1991). industrial statistics 1990. nicosia: .

MLA

department of statistics and research, . industrial statistics 1990. nicosia: . 1991.