APA (7 वां संस्करण) प्रशस्ति पत्र
Stoyanov, N. I., & Стоянов, Н. И. (2019). Economic aspects of sustainable development the building production in the region. RJPBCS RESEARCH JOURNAL PHARMACEUTICAL, BIOLOGICAL & CHEMICAL SCIENCES.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStoyanov, N. I., और Н. И Стоянов. Economic Aspects of Sustainable Development the Building Production in the Region. RJPBCS RESEARCH JOURNAL PHARMACEUTICAL, BIOLOGICAL & CHEMICAL SCIENCES, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStoyanov, N. I., और Н. И Стоянов. Economic Aspects of Sustainable Development the Building Production in the Region. RJPBCS RESEARCH JOURNAL PHARMACEUTICAL, BIOLOGICAL & CHEMICAL SCIENCES, 2019.
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