Gaya APA
Johnson, Kenneth D.. (1984).
Biology an introduction .
California:
The Benjamin/Cummings.
Gaya Chicago
Johnson, Kenneth D..
Biology an introduction.
California:
The Benjamin/Cummings,
1984.
Tesis.
Gaya MLA
Johnson, Kenneth D..
Biology an introduction.
California:
The Benjamin/Cummings,
1984.
Tesis.
Gaya Turabian
Johnson, Kenneth D..
Biology an introduction.
California:
The Benjamin/Cummings,
1984.
Tesis.