Gaya APA
Freund, J, E. et al (1988).
Elementary business statistics : the modern approach (5th ed).
Englewood Cliffs, NJ:
Prentice-Hall.
Gaya MLA
Freund, John, E.. et al.
"Elementary business statistics : the modern approach".
5th ed
Englewood Cliffs, NJ:
Prentice-Hall,
1988.
Text.