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Pettiford, Lloyd, Steans, Jill. (2001). An Introduction to Internasional relations Theory Perspectives and themes (Buku Hubungan Internasional) . New York: Longman Group.

Gaya Chicago

Pettiford, Lloyd, Steans, Jill. An Introduction to Internasional relations Theory Perspectives and themes (Buku Hubungan Internasional). New York: Longman Group, 2001. Text.

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Pettiford, Lloyd, Steans, Jill. An Introduction to Internasional relations Theory Perspectives and themes (Buku Hubungan Internasional). New York: Longman Group, 2001. Text.

Gaya Turabian

Pettiford, Lloyd, Steans, Jill. An Introduction to Internasional relations Theory Perspectives and themes (Buku Hubungan Internasional). New York: Longman Group, 2001. Print.