Gaya APA
PEALE, N, V.
(1997).
POWER OF THE PLUS FACTOR KEKUATAN FAKTOR PLUS
.
Jakarta:
Profesional Books.
Gaya MLA
PEALE, NORMAN, VINCENT.
"POWER OF THE PLUS FACTOR KEKUATAN FAKTOR PLUS".
Jakarta:
Profesional Books,
1997.
Text.