英文文献：The Total Value Of Wildlife: A Case Study Involving Endangered Species
英文文献作者：Boyle, Kevin J.,Bishop, Richard C.
英文文献摘要：
The components of value for a wildlife resource are discussed, with emphasis on existence value. A simple model is proposed and preliminary results of an application to valuing endangered species of wildlife are presented. The empirical results indicate that significant nonuse values may be associated with endangered species of wildlife.