Gaya APA
Duffy, Karen G.. (2008).
Annual editions : psychology 2008/2009 (38).
New York:
McGraw Hill.
Gaya Chicago
Duffy, Karen G..
Annual editions : psychology 2008/2009.
38
New York:
McGraw Hill,
2008.
Text.
Gaya MLA
Duffy, Karen G..
Annual editions : psychology 2008/2009.
38
New York:
McGraw Hill,
2008.
Text.
Gaya Turabian
Duffy, Karen G..
Annual editions : psychology 2008/2009.
38
New York:
McGraw Hill,
2008.
Print.