Gaya APA
Wilsdon, P, D, T, J, C.
(2017).
National Geographic - Sains Pedia
.
Jakarta:
PT Gramedia.
Gaya MLA
Wilsdon, Patricia, Daniels,, Tom, Jackson,, Christina.
"National Geographic - Sains Pedia".
Jakarta:
PT Gramedia,
2017.
Text.