Richard G. Goire (Trans.)
I think this book is an indispensable guide for anyone planning on cultivating Salvia divinorum. I regularly read my copy of this book whenever I am planning on doing anything to my plants. It starts with the process of taking and rooting cuttings, goes on to discuss various soils and lighting options for best results, and a lot on general care. It also covers common pests and diseases.
On the downside, this book is pretty short. It is an introduction to growing Salvia divinorum, and as such will offer nothing to the advanced Salvia divinorum grower.