Gaya APA
PACKARD, H.
(1992).
The Easiest Way To Organize Your Work
(
edisi 1)
.
USA:
HEWLETT PACKARD.
Gaya MLA
PACKARD, HEWLETT.
"The Easiest Way To Organize Your Work".
edisi 1
USA:
HEWLETT PACKARD,
1992.
Text.