Foundation for Environmental Conservation. (1974). Environmental conservation. Elsevier Sequoia.
Chicago Style (17th ed.) CitationFoundation for Environmental Conservation. Environmental Conservation. Lausanne: Elsevier Sequoia, 1974.
Cita MLAFoundation for Environmental Conservation. Environmental Conservation. Elsevier Sequoia, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.