Gaya APA
Krohne , David T.. (2000).
General ecology (edisi -2).
Wisconsin:
Brooks/Cole Publishing Company .
Gaya Chicago
Krohne , David T..
General ecology.
edisi -2
Wisconsin:
Brooks/Cole Publishing Company ,
2000.
Text.
Gaya MLA
Krohne , David T..
General ecology.
edisi -2
Wisconsin:
Brooks/Cole Publishing Company ,
2000.
Text.
Gaya Turabian
Krohne , David T..
General ecology.
edisi -2
Wisconsin:
Brooks/Cole Publishing Company ,
2000.
Print.