Skidoo movie review & film summary (1968)  Roger Ebert Mon, 30th October 2017

Skidoo  reverseshot.org Sat, 3rd September 2011

Groucho Marx, Jackie Gleason and Carol Channing on acid: ‘Skidoo’ the movie, watch it now  dangerousminds.net Sat, 2nd October 2010

Gleason as Tripster, Groucho as God (Published 2011)  The New York Times Fri, 22nd July 2011

Review: Otto Preminger’s Skidoo on Olive Films DVD  Slant Magazine Wed, 27th July 2011

Skidoo  DVD Talk Fri, 24th June 2011