APA (7th ed.) Citation

L, D. (2009). Games, gamers, and gaming. Gamers with heart. Library Journal, 134(19), 49.

Chicago Style (17th ed.) Citation

L, Danforth. "Games, Gamers, and Gaming. Gamers with Heart." Library Journal 134, no. 19 (2009): 49.

MLA (9th ed.) Citation

L, Danforth. "Games, Gamers, and Gaming. Gamers with Heart." Library Journal, vol. 134, no. 19, 2009, p. 49.