Sanburg, Carl
New York Harcourt, Brace and Company 1920
Buku Teks
Crowder, Richard
Twayne Publisher, 1964
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Listi Herlistiani
1990
UI - Skripsi (Membership)
Yoon, Sook-Ja (윤숙자)
Seoul : Hollym Elizabert, 2006
Buku Teks
American Bar Association, 1978
Buku Teks