Gaya APA
Surya, T, P, Y.
(2017).
Seri Olimpiade Sains Matematika MTs/SMP Geometri
.
Tangerang:
Kandel.
Gaya MLA
Surya, Tim, Prof., Yohannes.
"Seri Olimpiade Sains Matematika MTs/SMP Geometri".
Tangerang:
Kandel,
2017.
Reference.