Artikel Jurnal
Hubbard, L. Ron, 1911-1986
Ron Hubbard Library, 2011
Multimedia
edited by Susan E. Israel, Gerald G. Duffy
Routledge, 2009
Buku Referensi
Lawrence Erlbaum Associates, 2004
Buku Teks
edited by Norman K. Denzin, Yvonna S. Lincoln
Sage, 2011
Buku Referensi