APA Style
Singer, David; -; -. (1990).
Models, Methods, and Progress in World Politics .
:
.
Chicago Style
Singer, David; -; -.
Models, Methods, and Progress in World Politics.
:
,
1990.
.
MLA Style
Singer, David; -; -.
Models, Methods, and Progress in World Politics.
:
,
1990.
.
Turabian Style
Singer, David; -; -.
Models, Methods, and Progress in World Politics.
:
,
1990.
.