Cita APA (7a ed.)

Dennis, F. A. 2., & Castleton, D. A. 2. (1989). Case studies in population and natural resource: Costa Rica. [S.l.] , [S.l.] : [S.e.].

Cita Chicago Style (17a ed.)

Dennis, Frances Autoría 26056, y Dulce Autora 26057 Castleton. Case Studies in Population and Natural Resource: Costa Rica. [S.l.] , [S.l.] : [S.e.], 1989.

Cita MLA (9a ed.)

Dennis, Frances Autoría 26056, y Dulce Autora 26057 Castleton. Case Studies in Population and Natural Resource: Costa Rica. [S.l.] , [S.l.] : [S.e.], 1989.