Lee, P. (2020). Preston lee's read & write english lesson 1: 20 for russian speakers. Smashwords Edition.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLee, Preston. Preston Lee's Read & Write English Lesson 1: 20 for Russian Speakers. Pacific Grove: Smashwords Edition, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLee, Preston. Preston Lee's Read & Write English Lesson 1: 20 for Russian Speakers. Smashwords Edition, 2020.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.