Verma, P. S., & Agarwal, V. K. (2004). Environmental biology: Principles of ecology. S. Chand & Co.
シカゴスタイル引用形Verma, P. S., , V. K. Agarwal. Environmental Biology: Principles of Ecology. New Delhi: S. Chand & Co, 2004.
MLA引用形式Verma, P. S., , V. K. Agarwal. Environmental Biology: Principles of Ecology. S. Chand & Co, 2004.
警告: この引用は必ずしも正確ではありません.