The Tri-metallic question :
the handbook of the Winchester expedition of the Sherlock Holmes Society of London, 30th August-1st September 1991 /
editor, Peter Horrocks.

APA Citation

Sherlock Holmes Society of London., Horrocks, P. (1991). The Tri-metallic question: the handbook of the Winchester expedition of the Sherlock Holmes Society of London, 30th August-1st September 1991. London: Sherlock Holmes Society of London.

MLA Citation

Sherlock Holmes Society of London, and Peter Horrocks. The Tri-metallic Question: the Handbook of the Winchester Expedition of the Sherlock Holmes Society of London, 30th August-1st September 1991. London: Sherlock Holmes Society of London, 1991.

Warning: These citations may not always be complete (especially for serials).