4. Eduard Mahirs; "Recht zur Strafe und das Strafe Maas." Penerbit Weber, München. Tahun 1830. Hlm 6.5. Thomas J. Craughwell; "Failures of The Presidents" Penerbit. Pair Winds Press. Beverly. Massachusetts. Tahun 2008. Hlm. 12
6. Thomas J. Craughwell; "Failures of The Presidents" Penerbit. Pair Winds Press. Beverly. Massachusetts. Tahun 2008. Hlm. 137. Jamin Soderstrom; QUALIFIED: " Candidat Resume and Threshold for President Success". Penerbit. iUniverse.Tahun 2011. Hlm 18
8. Prof. Emitai Etzioni; "The Spirit of Communitarianism & Communitarianism of Citizenship"9. Jamin Soderstrom; QUALIFIED: " Candidat Resume and Threshold for President Success". Penerbit. iUniverse.Tahun 2011. Hlm 18
10. Jamin Soderstrom; QUALIFIED: " Candidat Resume and Threshold for President Success". Penerbit. iUniverse.Tahun 2011. Hlm 2011. https://www.google.com/url?sa=t&source=web&rct=j&url=https://amp.kompas.com/nasional/read/2017/04/18/13285501/megawati-betapa-teririsnya-saya-melihat-perpecahan-dan-konflik-saat-ini&ved=2ahUKEwjTxbm645v2AhVLTGwGHVX8CD0QFnoECD4QAQ&usg=AOvVaw2RKSe7vEZyQ1K6BOfzie_I
12. https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.bps.go.id/indicator/34/638/1/indeks-demokrasi-indonesia-idi-menurut-indikator.html&ved=2ahUKEwiTmu6v25z2AhVb7XMBHXYEDAoQFnoECAQQAQ&usg=AOvVaw3fjQL2Ktcw1JXgZcGIcdvy13. Stein Ringen; "What Democracy is For" On Freedom and Moral Government. Penerbit. Pricenton University Press. Tahun 2009. Hlm. 114. Stein Ringen; "What Democracy is For" On Freedom and Moral Government. Penerbit. Pricenton University Press. Tahun 2009. Hlm. 315. Stefanus Hendrianto; Law and Politics of Constitutional Courts "Indonesia and The Search For Judical Research" Comperatif Constitutionalism in Moslem Majority States. Penerbit. Routledge. Tahun 2018. Hlm. 23
16. Prof. Emitai Etzioni; "The Spirit of Communitarianism & Communitarianism of Citizenship"17. Eduard Mahirs; "Recht zur Strafe und das Strafe Maas." Penerbit Weber, München. Tahun 1830. Hlm 6.
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