Lee, Mira; Faber, Ronald J. (1 January 2007). "Effects of Product Placement in On-Line Games on Brand Memory: A Perspective of the Limited-Capacity Model of Attention". Journal of Advertising. 36 (4): 75–90. doi:10.2753/joa0091-3367360406. JSTOR20460815. S2CID143613767.
Lee, Mira; Faber, Ronald J. (1 January 2007). "Effects of Product Placement in On-Line Games on Brand Memory: A Perspective of the Limited-Capacity Model of Attention". Journal of Advertising. 36 (4): 75–90. doi:10.2753/joa0091-3367360406. JSTOR20460815. S2CID143613767.
Lee, Mira; Faber, Ronald J. (1 January 2007). "Effects of Product Placement in On-Line Games on Brand Memory: A Perspective of the Limited-Capacity Model of Attention". Journal of Advertising. 36 (4): 75–90. doi:10.2753/joa0091-3367360406. JSTOR20460815. S2CID143613767.
William Vitka (2005-07-16). "In-Game Advertising - IGA Worldgroup Leads The Pack And They Might Be Getting It Just Right". CBS News. [5]. Retrieved 2006-11-03.