APA Style
Yusuf, A, N.
(1993).
Lomba Penelitian Ilmiah Remaja 1987
.
Jakarta:
Balai Pustaka.
MLA Style
Yusuf, Arief, Nazaruddin.
"Lomba Penelitian Ilmiah Remaja 1987".
Jakarta:
Balai Pustaka,
1993.
Text.