Gaya APA
Wilsdon, C., Andrayani, H.
(2018).
NATIONAL GEOGRAPHIC LAUTPEDIA
.
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Wilsdon, Christina., Andrayani, Hera.
"NATIONAL GEOGRAPHIC LAUTPEDIA".
Jakarta:
Gramedia Pustaka Utama,
2018.
Text.