APA Style
Bellamy, David. (1991).
How Green are You? .
:
.
Chicago Style
Bellamy, David.
How Green are You?.
:
,
1991.
Text.
MLA Style
Bellamy, David.
How Green are You?.
:
,
1991.
Text.
Turabian Style
Bellamy, David.
How Green are You?.
:
,
1991.
Print.