Britannica book of the year 2002
Encyclopaedia Britannica Inc., 2002
 Buku Referensi
The china year book 1926
Simpkin, Marshall, Hamilton, Kent, 1927
 Buku Teks
2002 britannica book of the year
Chicago: Encyclopedia Britanica, 2002,
 Buku Referensi
Loehrer, Patrick J., editor-in.chief
The year book of oncology
Elsevier, 2005
 Buku Referensi
Britanica book of the year 2000
Chicago : encyclopaedia Britanica Inc, 2000,
 Buku Referensi
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