Gaya APA
Gilley, Herry W. (1999).
the Performance Challenge (1).
New York:
Porseus Books.
Gaya Chicago
Gilley, Herry W.
the Performance Challenge.
1
New York:
Porseus Books,
1999.
Text.
Gaya MLA
Gilley, Herry W.
the Performance Challenge.
1
New York:
Porseus Books,
1999.
Text.
Gaya Turabian
Gilley, Herry W.
the Performance Challenge.
1
New York:
Porseus Books,
1999.
Print.