McFarland. 2001-05-17. ISBN 9780786410255 –通过Google Books. Stark County History - Stark County, ND. Stark County, ND. [2024-06-04]. (原始内容存档于2024-06-04). Walsh
500種產品。 Harold Stark, "The Ultimate Guide To Building Your Own Smart Home In 2017," (页面存档备份,存于互联网档案馆) Forbes, May 22, 2017. Oliver Kaven, "Zensys' Z-Wave