Hubbard, L. Ron, 1911-1986, author
Bridge Publications, 2012
Buku Referensi
edited by Susan L. Feagin and Patrick Mayhard
Oxford University Press, 1997
Buku Teks
Osborne, Harold
London Routledge & Kegan Paul 1955
Buku Teks
Berenson, Bernard, 1865-1959, author
Doubleday Anchor Books, 1953
Buku Teks
Chen Qizhi, translator ; Li Yi, Zhuo Zhenying, translator
Hunan People Publishing House, 2006
Buku Teks