This book is a must-have for any Laverda enthusiast.  An excellent collection of factory photographs and literature with comprehensive coverage of the marques entire history. 
Not cheap, but very nice- not unlike the bikes!
168 pages, published by PPS Editore (?) 1998
Copies of this still pop upfor sale from time to time, but very rarely.

This book was composed using information gathered by the 750SFC Registry over a period of some five years.  Without question the most comprehensive source of information for these fantastic bikes.
112 Pages, privately published.
The produced 1000 copies sold quickly, seen occasionally on ebay for ridiculous figures.

A nice job by motorcycle journalist Mick Walker, mostly black
and white pictures. Covers the Zané models.
176 pages, hardcover, Crowood Press, 1999
ISBN 1-86126-220-5

To the best of my knowledge this was the first book released which focussed entirely on the history of the Laverda motorcycle.  Ray and Tim are dyed-in-the-wool Laverda men but distance themselves enough to write an honest appraisal of the marque's history.  Availabiltiy is scarce these days but worth every cent if you can find one.
183 pages, published by Osprey press, 1991
ISBN 1-85532-183-1

A comprehensive collection of articles from magazines the world over covering bikes from 200 through to 1000cc.  Magazine reprints though, so the quality is pretty average.
172 pages, Brooklands Books, 19??
ISBN 1-85520-3537
Pretty easily available still.

Beautifully produced production on the SFC.
78 pages, privately published, 1994
Website: http://www.inmilano.it/registrolaverda/menu.htm
The original edition of this issue consists of 1000 numbered copies.