Gaya APA
Curtis, Helena. (1985).
Biology (4e).
New York:
Warth.
Gaya Chicago
Curtis, Helena.
Biology.
4e
New York:
Warth,
1985.
Buku.
Gaya MLA
Curtis, Helena.
Biology.
4e
New York:
Warth,
1985.
Buku.
Gaya Turabian
Curtis, Helena.
Biology.
4e
New York:
Warth,
1985.
Buku.