Freeland Peter. (1991). Focus on biology: Habitats and the environment. London: Hodder and Stoughton.
シカゴスタイル引用形Freeland Peter. Focus On Biology: Habitats and the Environment. London: Hodder and Stoughton, 1991.
MLA引用形式Freeland Peter. Focus On Biology: Habitats and the Environment. London: Hodder and Stoughton, 1991.
警告: この引用は必ずしも正確ではありません.