APA
The PROMETHEUS Thematic Working Group 4, Man-Machine Interaction [WG4/MMI], . (1991). MMI checklist. Version 2.1. Göteborg: The PROMETHEUS Thematic Working Group 4.
Chicago
The PROMETHEUS Thematic Working Group 4, Man-Machine Interaction [WG4/MMI], . 1991. MMI checklist. Version 2.1. Göteborg: The PROMETHEUS Thematic Working Group 4.
Harvard
The PROMETHEUS Thematic Working Group 4, Man-Machine Interaction [WG4/MMI], . (1991). MMI checklist. Version 2.1. Göteborg: The PROMETHEUS Thematic Working Group 4.
MLA
The PROMETHEUS Thematic Working Group 4, Man-Machine Interaction [WG4/MMI], . MMI checklist. Version 2.1. Göteborg: The PROMETHEUS Thematic Working Group 4. 1991.