Encyclopaedia Britannica : volume 23
Encyclopaedia Britannica Inc., 1968
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Encyclopaedia universalis : volume 23
Encyclopaedia Universalis France S.A. , 1989
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The New Encyclopaedia Britannica : volume 23
Encyclopaedia Britannica Inc., 2003
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The New Encyclopaedia Britannica : volume 23
Encyclopaedia Britannica Inc., 1988
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The New Encyclopaedia Britannica : volume 23, micropaedia konowledge in depth
Encyclopaedia Britannica Inc., 2002
 Buku Referensi