Obrist, H. (2014). Retrace Your Steps: Remember Tomorrow. Sharp Tongues, Loose Lips, Open Eyes, Ears to the Ground.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रObrist, Hans-Ulrich. "Retrace Your Steps: Remember Tomorrow." Sharp Tongues, Loose Lips, Open Eyes, Ears to the Ground 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रObrist, Hans-Ulrich. "Retrace Your Steps: Remember Tomorrow." Sharp Tongues, Loose Lips, Open Eyes, Ears to the Ground, 2014.
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