Liubov Chekhovska. (2017). Fitness industry: State and prospects of development in the countries of the world. Kharkiv State Academy of Physical Culture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLiubov Chekhovska. Fitness Industry: State and Prospects of Development in the Countries of the World. Kharkiv State Academy of Physical Culture, 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLiubov Chekhovska. Fitness Industry: State and Prospects of Development in the Countries of the World. Kharkiv State Academy of Physical Culture, 2017.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.