APA Style
Human development report 1991. (1991).
New York:
UNDP.
Chicago Style
Human development report 1991.
.
New York:
UNDP,
1991.
.
MLA Style
Human development report 1991.
.
New York:
UNDP,
1991.
.
Turabian Style
Human development report 1991.
New York:
UNDP,
1991.
.