Page "Ferengi" Paragraph 30

Most of the rules were written by Ira Steven Behr, a producer of Star Trek: Deep Space Nine, and he has published many of them in a book The Ferengi Rules of Acquisition ( ISBN 0-671-52936-6 ), the cover of which credits authorship as being " By Quark as told to Ira Steven Behr ".

Additional rules were published in Legends of the Ferengi ( ISBN 0-671-00728-9 ), by Behr and Robert Hewitt Wolfe.

In the latter, " Quark " includes a number of anecdotes, both from Ferengi history and his own past, to illustrate the rules in question.