APA
ACM Special Interest Group on Computer-Human Interaction, . (2019). Proceedings of the 21st International Conference on Human-Computer Interaction with Mobile Devices and Services. New York,NY,United States: Association for Computing Machinery.
Chicago
ACM Special Interest Group on Computer-Human Interaction, . 2019. Proceedings of the 21st International Conference on Human-Computer Interaction with Mobile Devices and Services. New York,NY,United States: Association for Computing Machinery.
Harvard
ACM Special Interest Group on Computer-Human Interaction, . (2019). Proceedings of the 21st International Conference on Human-Computer Interaction with Mobile Devices and Services. New York,NY,United States: Association for Computing Machinery.
MLA
ACM Special Interest Group on Computer-Human Interaction, . Proceedings of the 21st International Conference on Human-Computer Interaction with Mobile Devices and Services. New York,NY,United States: Association for Computing Machinery. 2019.