Obrist, H. (2014). Retrace Your Steps: Remember Tomorrow. Sharp Tongues, Loose Lips, Open Eyes, Ears to the Ground.
Chicago-referens (17:e uppl.)Obrist, Hans-Ulrich. "Retrace Your Steps: Remember Tomorrow." Sharp Tongues, Loose Lips, Open Eyes, Ears to the Ground 2014.
MLA-referens (8:e uppl.)Obrist, Hans-Ulrich. "Retrace Your Steps: Remember Tomorrow." Sharp Tongues, Loose Lips, Open Eyes, Ears to the Ground, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.