Gaya APA
Depdikbud, .
(1990).
Lomba penelitian Ilmiah Remaja 1988
.
Jakarta:
Balai Pustaka.
Gaya MLA
Depdikbud, .
"Lomba penelitian Ilmiah Remaja 1988".
Jakarta:
Balai Pustaka,
1990.
000_General Works.