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APA Citation
Neher, C., Bair, L., Duffield, J., Patterson, D., & Neher, K. (2019). convergent validity between willingness to pay elicitation methods: an application to Grand Canyon whitewater boaters. Journal of environmental planning and management, 62(4), 611–625. http://access.bl.uk/ark:/81055/vdc_100085339034.0x000045