(2017). Екологично инженерство и опазване на околната среда. National Society of Ecological Engineering and Environment Protection.
Chicago Style (17th ed.) CitationЕкологично инженерство и опазване на околната среда. National Society of Ecological Engineering and Environment Protection, 2017.
MLA (8th ed.) CitationЕкологично инженерство и опазване на околната среда. National Society of Ecological Engineering and Environment Protection, 2017.
Warning: These citations may not always be 100% accurate.