APA

Haslett;J. W, . (1979). Business systems handbook. New York: McGraw-Hill.

Chicago

Haslett;J. W, . 1979. Business systems handbook. New York: McGraw-Hill.

Harvard

Haslett;J. W, . (1979). Business systems handbook. New York: McGraw-Hill.

MLA

Haslett;J. W, . Business systems handbook. New York: McGraw-Hill. 1979.