Gaya APA
dkk, N, M. (2013).
Maestro olimpiade biologi SMP :mastering your strategy to be a successful olimpian .
Jakarta:
Erlangga.
Gaya MLA
dkk, Nurul, Mubarok.
"Maestro olimpiade biologi SMP :mastering your strategy to be a successful olimpian".
Jakarta:
Erlangga,
2013.
BUKU TEKS.