Gaya APA
Development through the lifespan. (2010).
Boston:
Allyn & Bacon.
Gaya Chicago
Development through the lifespan.
5th ed..
Boston:
Allyn & Bacon,
2010.
Buku.
Gaya MLA
Development through the lifespan.
5th ed..
Boston:
Allyn & Bacon,
2010.
Buku.
Gaya Turabian
Development through the lifespan.
Boston:
Allyn & Bacon,
2010.
Buku.