APA (7 वां संस्करण) प्रशस्ति पत्र
Environmental Protection UK. (2014). Essential environment: A comprehensive guide to UK and EU environment protection legislation (Edition 36.). Environmental Technology Publications Ltd.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Environmental Protection UK. Essential Environment: A Comprehensive Guide to UK and EU Environment Protection Legislation. Edition 36. Hertfordshire, [England]: Environmental Technology Publications Ltd, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Environmental Protection UK. Essential Environment: A Comprehensive Guide to UK and EU Environment Protection Legislation. Edition 36. Environmental Technology Publications Ltd, 2014.
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