APA (7 वां संस्करण) प्रशस्ति पत्र
(2021). Attitudes of Europeans towards tobacco and electronic cigarettes. European Commission.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Attitudes of Europeans Towards Tobacco and Electronic Cigarettes. Bruselas: European Commission, 2021.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Attitudes of Europeans Towards Tobacco and Electronic Cigarettes. European Commission, 2021.
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