APA Style
SMITH, ROBERT LEO. (1990).
ECOLOGY AND FIELD BIOLOGY (FOURTH ED.).
NEW YORK:
NATIONAL LEARNING,.
Chicago Style
SMITH, ROBERT LEO.
ECOLOGY AND FIELD BIOLOGY.
FOURTH ED.
NEW YORK:
NATIONAL LEARNING,,
1990.
Text.
MLA Style
SMITH, ROBERT LEO.
ECOLOGY AND FIELD BIOLOGY.
FOURTH ED.
NEW YORK:
NATIONAL LEARNING,,
1990.
Text.
Turabian Style
SMITH, ROBERT LEO.
ECOLOGY AND FIELD BIOLOGY.
FOURTH ED.
NEW YORK:
NATIONAL LEARNING,,
1990.
Print.