Ensiklopedi nasional Indonesia : jilid 2
Cipta Adi Pustaka, 1990
 Buku Referensi
Ensiklopedi Indonesia; Edisi khusus 2
Ichtiar Baru-Van Hoeve, 1989
 Buku Referensi
The Cultural library : volume 2, the marvels of nature
Parents' Magazine's Cultural Institute, 1965
 Buku Referensi
The Encyclopedia Americana : the international reference work, volume 2
Americana Corporation, 1960
 Buku Referensi
Collier's encyclopedia, with bibliography and index : volume 2
P.F. Collier & Son, 1954
 Buku Referensi
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