Freudenberg, B., Masuch, M., & Strothotte, T. (2001). Walk-Through Illustrations: Frame-Coherent Pen-and-Ink Style in a Game Engine. Computer graphics forum, 20(3), 184-192. https://doi.org/10.1111/1467-8659.00511
Chicago Style (17th ed.) CitationFreudenberg, Bert, Maic Masuch, and Thomas Strothotte. "Walk-Through Illustrations: Frame-Coherent Pen-and-Ink Style in a Game Engine." Computer Graphics Forum 20, no. 3 (2001): 184-192. https://doi.org/10.1111/1467-8659.00511.
MLA (9th ed.) CitationFreudenberg, Bert, et al. "Walk-Through Illustrations: Frame-Coherent Pen-and-Ink Style in a Game Engine." Computer Graphics Forum, vol. 20, no. 3, 2001, pp. 184-192, https://doi.org/10.1111/1467-8659.00511.
Warning: These citations may not always be 100% accurate.