Freund, John E. Elementary business statistics : the modern approach / John E. Freund and Frank J. Williams - 3rd ed. - Englewood Cliffs, NJ : Prentice Hall, c1977. - xv, 560 p. : 23 cm. ISBN: LCCN: Subjects--Topical Terms: Statistics LC Class. No.: HA29 / .F683 1977 Dewey Class. No.: 519.5 / F889c