Gaya APA
Ary, D.
(1979).
Introduction to research in education/ Donald Ary, lucy Cheser, Asghar Razavieh
.
USA:
Holt.
Gaya MLA
Ary, Donald.
"Introduction to research in education/ Donald Ary, lucy Cheser, Asghar Razavieh".
USA:
Holt,
1979.
Text.