APA引文

Valk, A. v. d. (1999). Elasticities? claro que si! an analysis of the domestic Costa Rican food demand.

Citación estilo Chicago

Valk, A.L. van der. Elasticities? Claro Que Si! an Analysis of the Domestic Costa Rican Food Demand. 1999.

MLA引文

Valk, A.L. van der. Elasticities? Claro Que Si! an Analysis of the Domestic Costa Rican Food Demand. 1999.

警告：這些引文格式不一定是100％准確.