Gaya APA
Collinge, B, A.
(2015).
Einstein Baby Perangsang Otak
(
Cet.1)
.
Yogyakarta:
GoldenBooks.
Gaya MLA
Collinge, Betty, Ann.
"Einstein Baby Perangsang Otak".
Cet.1
Yogyakarta:
GoldenBooks,
2015.
Text.