Books on sociocracy by Gerard Endenburg are published by Eburon Academic Publishers in The Netherlands. They can be purchased on their website, often more inexpensively than in the United States.
These titles can also be purchased through AbeBooks.com where you can search the inventories of thousands of booksellers around the world for new, used, rare, and out-of-print books.
The Two Major Books on Sociocracy by Gerard Endenburg
The original edition was published in Dutch in 1981. The first English translation was published in 1988. The first Eburon edition in 1998. Current Eburon edition was published in 2002.
This is the first complete presentation of Endenburg’s method of decision-making and organization. It was developed in the 1970s while organizing his company, Endenburg Elektrotechniek. The early editions of this book were copies of a typescript.
Of everything written on sociocracy, this is the text I prefer because it includes Gerard Endenburg’s own story of why he thinks sociocracy is important and what he was searching for when he began “fixing” his company to reproduce the harmonious and productive atmosphere he experienced at boarding school.
Sociocracy as Social Design (1998) (And in Dutch as Sociocratie als sociaal ontwerp.)
A collection of works based on his doctoral dissertation from the University of Twente. The English translation of this book is less comfortable though it does contain more developed materials.
There are a few other small works floating around in various languages but these are the two major books