APA Style
Krebs, Charles J.. (1989).
Ecological methodology .
New York:
Harper & Brothers Publishers.
Chicago Style
Krebs, Charles J..
Ecological methodology.
New York:
Harper & Brothers Publishers,
1989.
Text.
MLA Style
Krebs, Charles J..
Ecological methodology.
New York:
Harper & Brothers Publishers,
1989.
Text.
Turabian Style
Krebs, Charles J..
Ecological methodology.
New York:
Harper & Brothers Publishers,
1989.
Print.