Gaya APA
essentials of bology. (1998).
New York:
[s.n.].
Gaya Chicago
essentials of bology.
2.
New York:
[s.n.],
1998.
Text.
Gaya MLA
essentials of bology.
2.
New York:
[s.n.],
1998.
Text.
Gaya Turabian
essentials of bology.
New York:
[s.n.],
1998.
Print.