Gaya APA
Gribbin, M, D, J.
(1997).
Jendela iptek " Ruang & Waktu"
.
jakarta:
PT. Balai Pustaka.
Gaya MLA
Gribbin, Mary, Dan, John.
"Jendela iptek " Ruang & Waktu"".
jakarta:
PT. Balai Pustaka,
1997.
Text.