APA aipamena

Spongberg, A. L., & Davis, P. (1998). Organochlorinated pesticide contaminants in Golfo Dulce, Costa Rica.

Chicago Style aipamena

Spongberg, Alison L., y Penny Davis. Organochlorinated Pesticide Contaminants in Golfo Dulce, Costa Rica. 1998.

MLA aipamena

Spongberg, Alison L., y Penny Davis. Organochlorinated Pesticide Contaminants in Golfo Dulce, Costa Rica. 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.