Gaya APA
Plutchik, Robert. (1983).
Foundations of experimental research (3rd ed).
Philadelphia:
Harper and Row.
Gaya Chicago
Plutchik, Robert.
Foundations of experimental research.
3rd ed
Philadelphia:
Harper and Row,
1983.
Text.
Gaya MLA
Plutchik, Robert.
Foundations of experimental research.
3rd ed
Philadelphia:
Harper and Row,
1983.
Text.
Gaya Turabian
Plutchik, Robert.
Foundations of experimental research.
3rd ed
Philadelphia:
Harper and Row,
1983.
Print.