Gaya APA
Gessin, J, M., Brownstein, M.
(1987).
Advanced PFS : Profesional Write dan file
.
Ber:
Osborn MCGraw-hill.
Gaya MLA
Gessin, Janice, M., Brownstein, Mark.
"Advanced PFS : Profesional Write dan file".
Ber:
Osborn MCGraw-hill,
1987.
Text.