By Fiona Collins, Ed Fisher
By Barrie Wade, David Lopez
By Sharon Blackie
By Martin Green
By V. Propp, Laurence Scott, Louis A. Wagner
By Dr Farhad Daftary (The Institute of Ismaili Studies, UK)
By Else Lennox
By Philippe de Baeck
By Michael Dames
By Calasso, Roberto
By Idries Shah
By Brenda Duxbury, etc.
By Rijk van Dijk, Ria Reis, Maja Spierenburg
By Ulli Beier, Georgina Beier
By Godfrey Lienhardt (former Reader in Social Anthropology, former Reader in Social Anthropology, University of Oxford)
By Neil Bennun
By Barry Hallen
By Pia Jones, Tamsin Cooke, Sarah Pimenta
By Maria Dahvana Headley
By J. Dillinger
By Scheub
By U. Kockel, M. Nic Craith, Kenneth A. Loparo
By Moyra Caldecott, Cheryl Yambrach Rose
By Kirsty Hartsiotis
By Vanessa James
By Jack Zipes
By Hank Wangford
By GEORGE EWART EVANS, Patrick Barkham, David Gentleman
By Luc de Heusch