合约选择 - 引用次数：1参考来源 - 制度变迁中土地产权的性质与合约选择:一个有关合作经济的案例分析 The nature of land property rights and contract options in institutional changes :A case study of cooperation economy
It seems that we would like to see a choice in the contract between paying for design and editing services, for a pre-set cost against future sales, and having these things done out of your own pocket, but subject to approval by the publisher.