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Buku Teks
Hofmann, Michel R
Pierre Waleffe, 1967
Buku Teks
Dent, Edward J
Penguin Books, 1949
Buku Teks
Peyser, Ethel, author
G.P. Putnam's Sons, 1956
Buku Teks
Panggabean, Bachtiar, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1988
UI - Skripsi (Membership)