Gaya APA
Petra, T., P., K., P. et al. (2020).
Turning Point Desember 2020 : Be Tough For Everything You Do .
Surabaya:
PPPK Petra.
Gaya MLA
Petra, T., P., K., P. et al..
Turning Point Desember 2020 : Be Tough For Everything You Do.
Surabaya:
PPPK Petra,
2020.
Turning Point.