"This publication is based on a teaching given in London in 2002 by Doboom Rinpoche at the request of Tibet Foundation. The English text was originally published as a three-part series in the Tibet Foundation Newsletter, issues 48-50"--p. 3.
"It is published here in its entirety for the first time, along with some of Rinpoche's own teaching notes and the Tibetan text of 'Three principle aspects of the path'... (1357-1419)"--p. 3.
Lama Tsongkhapa's The three principal aspects of the path (lam gyi gtso bo rnam gsum gyi rtsa ba bzhugs so) by Doboom Tulku. ISBN 9781906199005. Published by Tibet Foundation in 2007. Publication and catalogue information, links to buy online and reader comments.