Gaya APA
Petra, D, P, P. (2024).
Gema Petra, Petra Western School's Festival (Juni 2024) .
Surabaya:
PPPK Petra.
Gaya MLA
Petra, Dewan, Pengurus, PPPK.
"Gema Petra, Petra Western School's Festival (Juni 2024)".
Surabaya:
PPPK Petra,
2024.
Gema Petra.