APA (7th ed.) Citation

Smith, R. L. S. a. T. M. Elements of ecology. Addison Wesley-Longman Inc.

Chicago Style (17th ed.) Citation

Smith, Robert Leo Smith and Thomas M. Elements of Ecology. Addison Wesley-Longman Inc.

MLA (8th ed.) Citation

Smith, Robert Leo Smith and Thomas M. Elements of Ecology. Addison Wesley-Longman Inc.

Warning: These citations may not always be 100% accurate.