Gaya APA
Duffy, Karen G.. (2004).
Adolescent psychology (4th ed.).
USA:
Dushkin McGraw-Hill.
Gaya Chicago
Duffy, Karen G..
Adolescent psychology.
4th ed.
USA:
Dushkin McGraw-Hill,
2004.
Text.
Gaya MLA
Duffy, Karen G..
Adolescent psychology.
4th ed.
USA:
Dushkin McGraw-Hill,
2004.
Text.
Gaya Turabian
Duffy, Karen G..
Adolescent psychology.
4th ed.
USA:
Dushkin McGraw-Hill,
2004.
Print.