APA aipamena

Vargas, R. (2003). Tilapia feed market of Costa Rica.

Chicago Style aipamena

Vargas, Ruth. Tilapia Feed Market of Costa Rica. 2003.

MLA aipamena

Vargas, Ruth. Tilapia Feed Market of Costa Rica. 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.