Cyhoeddwyd y stori Saesneg wreiddiol yn = Original English story published in : 'Monty - up to his neck in trouble' : London : A & C Black, 1991.
Sbeic yn mynd i barti by Colin West. ISBN 1860854060. Published by Uned Iaith Genedlaethol Cymru CBAC in 1999. Publication and catalogue information, links to buy online and reader comments.