Hazard, Harry W., author
Princeton University Press, 1951
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Roolvink, R., author
Djambatan, 1957
Buku Referensi
McNally, Rand, author
Rand McNally & Co, 1957
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general editors, Christopher Moseley and R.E. Asher; section editors Mary Tait ... [and others]
Routledge, New York Routledge Reference 1994
Buku Referensi
general editors, Christopher Moseley, R.E. Asher
Routledge, 1994
Buku Referensi