Gaya APA
Roskin, Michael G.. (1989).
Countries and concepts : an introduction to comparative polities (3rd ed).
Englewood Cliffs, NJ:
Prentice-Hall.
Gaya Chicago
Roskin, Michael G..
Countries and concepts : an introduction to comparative polities.
3rd ed
Englewood Cliffs, NJ:
Prentice-Hall,
1989.
Text.
Gaya MLA
Roskin, Michael G..
Countries and concepts : an introduction to comparative polities.
3rd ed
Englewood Cliffs, NJ:
Prentice-Hall,
1989.
Text.
Gaya Turabian
Roskin, Michael G..
Countries and concepts : an introduction to comparative polities.
3rd ed
Englewood Cliffs, NJ:
Prentice-Hall,
1989.
Print.