APA (7th ed.) Citation

(1990). The Soundex reference guide. Precision Indexing.

Chicago Style (17th ed.) Citation

The Soundex Reference Guide. Bountiful, Utah: Precision Indexing, 1990.

MLA (9th ed.) Citation

The Soundex Reference Guide. Precision Indexing, 1990.

Warning: These citations may not always be 100% accurate.