Gaya APA
Berk, L, E.
(2012).
Development Through the Lifespa
(
edisi kelima buku 1)
.
Yogyakarta:
PUSTAKA PELAJAR.
Gaya MLA
Berk, Laura, E..
"Development Through the Lifespa".
edisi kelima buku 1
Yogyakarta:
PUSTAKA PELAJAR,
2012.
Umum.