एपीए उद्धरण

Freund, J. E., & Williams, J. F. P. (1970). Modern Business Statistics (2nd ed.). Pitman.

शिकागो स्टाइल उद्धरण

Freund, John E., और J. Frank Perles Williams. Modern Business Statistics. 2nd ed. London: Pitman, 1970.

एमएलए उद्धरण

Freund, John E., और J. Frank Perles Williams. Modern Business Statistics. 2nd ed. Pitman, 1970.