- Herman, Leonard. Phoenix: the fall & rise of videogames 2nd ed. Union, NJ: Rolenta Press. 1997: 20 [16 February 2012]. ISBN 0-9643848-2-5. （原始内容存档于2013-10-25）.
Like Pong, Telstar could only play video tennis but it retailed at an inexpensive $50 that made it attractive to most families that were on a budget. Coleco managed to sell over a million units that year.