APA Style
Heller, Charles E. (1993).
Twenty-First Century Force: A Federal Army And A Militia (1).
Pennsylvania:
Strategic Studies Institute.
Chicago Style
Heller, Charles E.
Twenty-First Century Force: A Federal Army And A Militia.
1
Pennsylvania:
Strategic Studies Institute,
1993.
Text.
MLA Style
Heller, Charles E.
Twenty-First Century Force: A Federal Army And A Militia.
1
Pennsylvania:
Strategic Studies Institute,
1993.
Text.
Turabian Style
Heller, Charles E.
Twenty-First Century Force: A Federal Army And A Militia.
1
Pennsylvania:
Strategic Studies Institute,
1993.
Print.