APA Style
Walpole, R, E. et al (2007, 2002, 1998, 19).
Probability & Statistics for Engineers & Scientists (Eighth Edition).
New Jersey:
Pearson Education.
MLA Style
Walpole, Ronald, E.. et al.
"Probability & Statistics for Engineers & Scientists".
Eighth Edition
New Jersey:
Pearson Education,
2007, 2002, 1998, 19.
Text.