APA aipamena

Rosero Bixby, L. (1988). Costa Rica saves infants’ lives.

Chicago Style aipamena

Rosero Bixby, Luis. Costa Rica Saves Infants’ Lives. 1988.

MLA aipamena

Rosero Bixby, Luis. Costa Rica Saves Infants’ Lives. 1988.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.