APA (7 वां संस्करण) प्रशस्ति पत्र

Petrovsky, H. Lost in time: Boris Mikhailov and his study of the Soviet / Helen Petrovsky. Ruins of modernity.(2010).

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Petrovsky, Helen. "Lost in Time: Boris Mikhailov and His Study of the Soviet / Helen Petrovsky." Ruins of Modernity.(2010) .

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Petrovsky, Helen. "Lost in Time: Boris Mikhailov and His Study of the Soviet / Helen Petrovsky." Ruins of Modernity.(2010), .