Gaya APA
RA., D, J., Underwood, A. (1991).
quantitative analysis (6th ed).
Englewood Cliffs, New Jersey:
Prentice-Hall.
Gaya MLA
RA., Day, Jr,., Underwood, AL..
"quantitative analysis".
6th ed
Englewood Cliffs, New Jersey:
Prentice-Hall,
1991.
Printed Book.