APA Style
Duffy, Karen D.. (2008).
Annual editions psysichology.-- .
America:
McGraw-Hill.
Chicago Style
Duffy, Karen D..
Annual editions psysichology.--.
America:
McGraw-Hill,
2008.
Buku.
MLA Style
Duffy, Karen D..
Annual editions psysichology.--.
America:
McGraw-Hill,
2008.
Buku.
Turabian Style
Duffy, Karen D..
Annual editions psysichology.--.
America:
McGraw-Hill,
2008.
Buku.