edited by Douglas L. Moeller, James L. Moeller
Wolters Kluwer, 2007
Buku Teks
Peter Brukner, Ben Clarsen, Jill Cook, Ann Cools, Kay Crossley, Mark Hutchinson, Paul McCrory, Roald Bahr, Karim Khan, authors
McGraw-Hill Education , 2017
Buku Teks
Sheard, Rod
Spon Press, 2001
Buku Teks
edited by Scott D. Mair
Mosby Elsevier, 2006
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Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2018
UI - Tugas Akhir