APA Style
Hoover,Herbert. (1971).
The challenge to liberty .
:
.
Chicago Style
Hoover,Herbert.
The challenge to liberty.
:
,
1971.
.
MLA Style
Hoover,Herbert.
The challenge to liberty.
:
,
1971.
.
Turabian Style
Hoover,Herbert.
The challenge to liberty.
:
,
1971.
.