Gaya APA
M., J, T, E. et al
(2020).
Colours and shapes
.
Surabaya:
CV Iranti Mitra Utama.
Gaya MLA
M., Jecinda, Theola, Elisabeth. et al.
"Colours and shapes".
Surabaya:
CV Iranti Mitra Utama,
2020.
Text.