Simmons, I. (1991). Earth, air and water: Resources and environment in the late 20th century. Edward Arnold.
Chicago Style (17th ed.) CitationSimmons, I.G. Earth, Air and Water: Resources and Environment in the Late 20th Century. London: Edward Arnold, 1991.
MLA引文Simmons, I.G. Earth, Air and Water: Resources and Environment in the Late 20th Century. Edward Arnold, 1991.
警告:這些引文格式不一定是100%准確.