Joan F. Curran, Madilyn C. Crane, and John H. Wray, authors, edited by Elizabeth Shown Mills, _Numbering Your Genealogy: Basic Systems, Complex Families, and International Kin_

Joan F. Curran, Madilyn C. Crane, and John H. Wray, authors, edited by Elizabeth Shown Mills, Numbering Your Genealogy: Basic Systems, Complex Families, and International Kin, rev. ed. (Washington: NGS, 2008).

Upfront@ngsgenealogy.org, "UpFront with NGS - Volume 8, Number 5-1 May 2008," listserve posting of 1 May 2008, NGS-L Archives, Rootsweb.com (http://archiver.rootsweb.ancestry.com/th/read/NGS/2008-05/1209644840 : ...); in part:
"This revised edition of an old favorite offers an expanded explanation of the differences between NGSQ and Register numbering systems. For researchers and writers who want to understand the best ways to number a genealogy, this book explains the treatment of adopted and step-families as well as immigrant ancestors and those who stayed behind in the old country.
The softbound book is priced at $12 for members or $15 for non-members, plus shipping ... Numbering Your Genealogy is also offered as a downloadable, searchable PDF e-book, priced at $8 for members or $10 for non-members. Visit the online NGS bookstore at www.ngsgenealogy.org/BookStore to purchase a print or downloadable copy. ..."