Gaya APA
Ratri, D, F.
(2012).
35 Cerita Sains: education anak 1
(
Cet. 1)
.
Jakarta:
Bestari Kids.
Gaya MLA
Ratri, Dwi, Fajar.
"35 Cerita Sains: education anak 1".
Cet. 1
Jakarta:
Bestari Kids,
2012.
Text.