The planets: giants
BBC Worldwide Limited, 2004
Multimedia
Press, Frank
Earth
W H Freeman , 1974
Buku Teks
Stewart, Kilton
Pygmies and dream giants
W.W. Norton, 1954
Buku Teks SO
Weidenreich, Franz, 1873-1948
Apes giants and man / by Franz Weidenreich
The University of Chicago Press , 1946
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Follett, ken
Fall of giants: runtuhnya dinasti raksasa
Esensi, 2010
Buku Teks SO