Gaya APA
Purba, A, Z, U.
(2005).
Hak Kekayaan Intelektual Pasca Trips
(
cet. 1)
.
Bandung:
PT. ALUMNI.
Gaya MLA
Purba, Achmad, Zen, Umar.
"Hak Kekayaan Intelektual Pasca Trips".
cet. 1
Bandung:
PT. ALUMNI,
2005.
Book.