Encyclopaedia Britannica : volume 1
Encyclopaedia Britannica Inc., 1968
 Buku Referensi
The Australian encyclopaedia : volume 1
Grolier Society of Australia, 1983
 Buku Referensi
Encyclopaedia universalis : volume 1
Encyclopaedia Universalis France S.A. , 1989
 Buku Referensi
An Encyclopaedia of New Zealand : volume 1
editor, A.H. McLintock
R. E. Owen, Goverment Printer, 1966
 Buku Referensi
The New Encyclopaedia Britannica : volume 1
Encyclopaedia Britannica Inc., 2003
 Buku Referensi
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