APA (7th ed.) Citation

Spash, C. L. (2009). Policy problems and approaches. Ecological economics.

Chicago Style (17th ed.) Citation

Spash, Clive L. "Policy Problems and Approaches." Ecological Economics 2009.

MLA (9th ed.) Citation

Spash, Clive L. "Policy Problems and Approaches." Ecological Economics, 2009.

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