Gaya APA
Core Biology. (2010).
Cambridge:
Cambridge university.
Gaya Chicago
Core Biology.
.
Cambridge:
Cambridge university,
2010.
Buku.
Gaya MLA
Core Biology.
.
Cambridge:
Cambridge university,
2010.
Buku.
Gaya Turabian
Core Biology.
Cambridge:
Cambridge university,
2010.
Buku.