APA Style
Wallace, George J., Mahan, Harold D.. ().
An Introduction to Ornithology 3rd edition .
:
.
Chicago Style
Wallace, George J., Mahan, Harold D..
An Introduction to Ornithology 3rd edition.
:
,
.
Text.
MLA Style
Wallace, George J., Mahan, Harold D..
An Introduction to Ornithology 3rd edition.
:
,
.
Text.
Turabian Style
Wallace, George J., Mahan, Harold D..
An Introduction to Ornithology 3rd edition.
:
,
.
Print.