Lennart Nacke. From playability to a hierarchical game usability model. In Bill Kapralos, Andrew Hogue, Ricardo Mahoney, Jay Raynovitch, editors, Proceedings of the 2009 Conference on Future Play on @ GDC Canada, Vancouver, BC, Canada, May 12 - 13, 2009. pages 11-12, ACM, 2009. [doi]
@inproceedings{Nacke09,
title = {From playability to a hierarchical game usability model},
author = {Lennart Nacke},
year = {2009},
doi = {10.1145/1639601.1639609},
url = {http://doi.acm.org/10.1145/1639601.1639609},
researchr = {https://researchr.org/publication/Nacke09},
cites = {0},
citedby = {0},
pages = {11-12},
booktitle = {Proceedings of the 2009 Conference on Future Play on @ GDC Canada, Vancouver, BC, Canada, May 12 - 13, 2009},
editor = {Bill Kapralos and Andrew Hogue and Ricardo Mahoney and Jay Raynovitch},
publisher = {ACM},
isbn = {978-1-60558-685-4},
}