Gaya APA
Newbold, P. et al (1991).
Statistics For Business and Economics (Edisi 3) (Ed. 3).
New Jersey:
Prentice Hall International.
Gaya MLA
Newbold, Paul. et al.
"Statistics For Business and Economics (Edisi 3)".
Ed. 3
New Jersey:
Prentice Hall International,
1991.
TEXT.