Thomas, Graham Stuart, author
Oregon Sagapress, 1990
Buku Teks
Martin, Edward C.
Wesport: AVI, c1983
Buku Referensi
Dhanu Armanto, author
Universitas Indonesia, 2009
UI - Skripsi (Open)
Bold, Harold Charles, 1909-, author
Harper & Row, 1957
Buku Teks
Meidner, Hans, author
Blackie, 1976
Buku Teks