APA Style
Krebs, Charles J. (1994).
ECOLOGY, Fourth Edition (4).
New York:
HarperCollinsCollegePublisher.
Chicago Style
Krebs, Charles J.
ECOLOGY, Fourth Edition.
4
New York:
HarperCollinsCollegePublisher,
1994.
Text.
MLA Style
Krebs, Charles J.
ECOLOGY, Fourth Edition.
4
New York:
HarperCollinsCollegePublisher,
1994.
Text.
Turabian Style
Krebs, Charles J.
ECOLOGY, Fourth Edition.
4
New York:
HarperCollinsCollegePublisher,
1994.
Print.