•
The Loch Ness Monster: The Evidence. 1986 The Aquarian Press (Thorsons Publishing Group) Wellingborough: ; Revised ed. 1991
Aberdeen University Press (Macmillan Pergamon Publishing Corporation) Aberdeen: ; 1996
Birlinn Ltd, Edinburgh: ; 1997 (without subtitle);
Prometheus Books, Amhurst: ; 2002
Birlinn Ltd, Edinburgh 1997: ). Argues against the existence of the
Loch Ness Monster by analysis of the purported evidence. •
The UFO Mystery Solved 1994 Explicit Books, Edinburgh: . A critical examination of UFO reports and their explanation in terms of meteorological and astronomical phenomena; •
The Rise and Fall of Jesus with a foreword by
Prof. James Thrower 1996 Explicit Books, Edinburgh: ; 2009 Revised and updated ed. WPS (WritersPrintShop): ; 2019 Revised 3rd ed.
Tectum Verlag (Nomos Publishing Company), Marburg: (print), (ePDF). Exploration of the origins of Christianity, asserting that Jesus wanted to be crucified. •
Chinook Crash (The crash of RAF Chinook helicopter ZD576 on the Mull of Kintyre) 2004 Pen & Sword Aviation (
Pen & Sword Books Ltd, Barnsley) (print) (ebook). An examination of and an explanation for the fatal
crash on 2 June 1994. ==References==