APA

Riggleman J. R., . (1951). Business Statistics. New York: McGraw-Hill.

Chicago

Riggleman John Randolph, . 1951. Business Statistics. New York: McGraw-Hill.

Harvard

Riggleman J. R., . (1951). Business Statistics. New York: McGraw-Hill.

MLA

Riggleman John Randolph, . Business Statistics. New York: McGraw-Hill. 1951.