The languages included in the UPSID sample are listed below, first according to a genetic classification, and secondly in alphabetical order. The genetic listing enables a quick check to be made on which languages are included from a given family. The genetic classification provided is intended only as an outline. Main subfamilies that are not listed have no representative in UPSID. In a few cases the affiliation of a language is uncertain (e.g. Cofan, 836). For convenience, the large Amerindian family has been divided on a geographical basis. The alphabetical listing enables a check to be made for inclusion of a particular language. The language names are those used throughout the book, but in some cases a cross-reference from an alternative name is given to assist in tracking down a given language. In both lists the language name is followed by the language identification number. These numbers are assigned mainly on a genetic basis (see Chapter 10). Note that, because of late additions and deletions to the sample, the sequence of numbers within a genetic group is not always continuous. The phonemic charts in this book are presented in the order of these identification numbers. The alphabetical list also serves as the key to the data sources consulted for each language. These sources are identified by author and date; the full references may be found in the bibliography of sources which forms the third part of this appendix.