APA (7th ed.) Citation

Wadsworth, R., & Treweek, J. (1999). GIS for ecology : an introduction /: An introduction /. Longman.

Chicago Style (17th ed.) Citation

Wadsworth, Richard, and Joanna Treweek. GIS for Ecology : An Introduction /: An Introduction /. Harlow: Longman, 1999.

MLA (9th ed.) Citation

Wadsworth, Richard, and Joanna Treweek. GIS for Ecology : An Introduction /: An Introduction /. Longman, 1999.

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