Gaya APA
Biology :Developed Specifically For the IB Diploma. (2007).
England:
Pearson.
Gaya Chicago
Biology :Developed Specifically For the IB Diploma.
.
England:
Pearson,
2007.
Buku.
Gaya MLA
Biology :Developed Specifically For the IB Diploma.
.
England:
Pearson,
2007.
Buku.
Gaya Turabian
Biology :Developed Specifically For the IB Diploma.
England:
Pearson,
2007.
Buku.