Lee, P. (2019). Preston lee's beginner english for russian speakers. Smashwords Edition.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLee, Preston. Preston Lee's Beginner English for Russian Speakers. Pacific Grove: Smashwords Edition, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLee, Preston. Preston Lee's Beginner English for Russian Speakers. Smashwords Edition, 2019.
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